diff --git a/audio/orchestra/Api.h b/audio/orchestra/Api.h
index 06f44b2..4032f7a 100644
--- a/audio/orchestra/Api.h
+++ b/audio/orchestra/Api.h
@@ -55,7 +55,7 @@ namespace audio {
 				void setName(const std::string& _name) {
 					m_name = _name;
 				}
-				virtual audio::orchestra::type getCurrentApi() = 0;
+				virtual const std::string& getCurrentApi() = 0;
 				virtual uint32_t getDeviceCount() = 0;
 				virtual audio::orchestra::DeviceInfo getDeviceInfo(uint32_t _device) = 0;
 				// TODO : Check API ...
@@ -173,9 +173,5 @@ namespace audio {
 		};
 	}
 }
-/**
- * @brief Debug operator To display the curent element in a Human redeable information
- */
-std::ostream& operator <<(std::ostream& _os, const audio::orchestra::type& _obj);
 
 #endif
diff --git a/audio/orchestra/Interface.cpp b/audio/orchestra/Interface.cpp
index 2cb5204..d57158a 100644
--- a/audio/orchestra/Interface.cpp
+++ b/audio/orchestra/Interface.cpp
@@ -13,8 +13,8 @@
 #undef __class__
 #define __class__ "Interface"
 
-std::vector<enum audio::orchestra::type> audio::orchestra::Interface::getCompiledApi() {
-	std::vector<enum audio::orchestra::type> apis;
+std::vector<std::string> audio::orchestra::Interface::getListApi() {
+	std::vector<std::string> apis;
 	// The order here will control the order of RtAudio's API search in
 	// the constructor.
 	for (size_t iii=0; iii<m_apiAvaillable.size(); ++iii) {
@@ -25,7 +25,7 @@ std::vector<enum audio::orchestra::type> audio::orchestra::Interface::getCompile
 
 
 
-void audio::orchestra::Interface::openRtApi(enum audio::orchestra::type _api) {
+void audio::orchestra::Interface::openApi(const std::string& _api) {
 	delete m_rtapi;
 	m_rtapi = nullptr;
 	for (size_t iii=0; iii<m_apiAvaillable.size(); ++iii) {
@@ -47,61 +47,62 @@ audio::orchestra::Interface::Interface() :
   m_rtapi(nullptr) {
 	ATA_DEBUG("Add interface:");
 #if defined(ORCHESTRA_BUILD_JACK)
-	ATA_DEBUG("    JACK");
 	addInterface(audio::orchestra::type_jack, audio::orchestra::api::Jack::create);
 #endif
 #if defined(ORCHESTRA_BUILD_ALSA)
-	ATA_DEBUG("    ALSA");
 	addInterface(audio::orchestra::type_alsa, audio::orchestra::api::Alsa::create);
 #endif
 #if defined(ORCHESTRA_BUILD_PULSE)
-	ATA_DEBUG("    PULSE");
 	addInterface(audio::orchestra::type_pulse, audio::orchestra::api::Pulse::create);
 #endif
 #if defined(ORCHESTRA_BUILD_OSS)
-	ATA_DEBUG("    OSS");
 	addInterface(audio::orchestra::type_oss, audio::orchestra::api::Oss::create);
 #endif
 #if defined(ORCHESTRA_BUILD_ASIO)
-	ATA_DEBUG("    ASIO");
 	addInterface(audio::orchestra::type_asio, audio::orchestra::api::Asio::create);
 #endif
 #if defined(ORCHESTRA_BUILD_DS)
-	ATA_DEBUG("    DS");
 	addInterface(audio::orchestra::type_ds, audio::orchestra::api::Ds::create);
 #endif
 #if defined(ORCHESTRA_BUILD_MACOSX_CORE)
-	ATA_DEBUG("    CORE OSX");
 	addInterface(audio::orchestra::type_coreOSX, audio::orchestra::api::Core::create);
 #endif
 #if defined(ORCHESTRA_BUILD_IOS_CORE)
-	ATA_DEBUG("    CORE IOS");
 	addInterface(audio::orchestra::type_coreIOS, audio::orchestra::api::CoreIos::create);
 #endif
 #if defined(ORCHESTRA_BUILD_JAVA)
-	ATA_DEBUG("    JAVA");
 	addInterface(audio::orchestra::type_java, audio::orchestra::api::Android::create);
 #endif
 #if defined(ORCHESTRA_BUILD_DUMMY)
-	ATA_DEBUG("    DUMMY");
 	addInterface(audio::orchestra::type_dummy, audio::orchestra::api::Dummy::create);
 #endif
 }
 
-void audio::orchestra::Interface::addInterface(enum audio::orchestra::type _api, Api* (*_callbackCreate)()) {
-	m_apiAvaillable.push_back(std::pair<enum audio::orchestra::type, Api* (*)()>(_api, _callbackCreate));
+void audio::orchestra::Interface::addInterface(const std::string& _api, Api* (*_callbackCreate)()) {
+	m_apiAvaillable.push_back(std::pair<std::string, Api* (*)()>(_api, _callbackCreate));
 }
 
-enum audio::orchestra::error audio::orchestra::Interface::instanciate(enum audio::orchestra::type _api) {
+enum audio::orchestra::error audio::orchestra::Interface::clear() {
+	ATA_INFO("Clear API ...");
+	if (m_rtapi == nullptr) {
+		ATA_WARNING("Interface NOT started!");
+		return audio::orchestra::error_none;
+	}
+	delete m_rtapi;
+	m_rtapi = nullptr;
+	return audio::orchestra::error_none;
+}
+
+enum audio::orchestra::error audio::orchestra::Interface::instanciate(const std::string& _api) {
 	ATA_INFO("Instanciate API ...");
 	if (m_rtapi != nullptr) {
-		ATA_WARNING("Interface already started ...!");
+		ATA_WARNING("Interface already started!");
 		return audio::orchestra::error_none;
 	}
 	if (_api != audio::orchestra::type_undefined) {
 		ATA_INFO("API specified : " << _api);
 		// Attempt to open the specified API.
-		openRtApi(_api);
+		openApi(_api);
 		if (m_rtapi != nullptr) {
 			if (m_rtapi->getDeviceCount() != 0) {
 				ATA_INFO("    ==> api open");
@@ -116,11 +117,11 @@ enum audio::orchestra::error audio::orchestra::Interface::instanciate(enum audio
 	ATA_INFO("Auto choice API :");
 	// Iterate through the compiled APIs and return as soon as we find
 	// one with at least one device or we reach the end of the list.
-	std::vector<enum audio::orchestra::type> apis = getCompiledApi();
+	std::vector<std::string> apis = getListApi();
 	ATA_INFO(" find : " << apis.size() << " apis.");
 	for (size_t iii=0; iii<apis.size(); ++iii) {
 		ATA_INFO("try open ...");
-		openRtApi(apis[iii]);
+		openApi(apis[iii]);
 		if(m_rtapi == nullptr) {
 			ATA_ERROR("    ==> can not create ...");
 			continue;
diff --git a/audio/orchestra/Interface.h b/audio/orchestra/Interface.h
index b1b84ec..6a7f0eb 100644
--- a/audio/orchestra/Interface.h
+++ b/audio/orchestra/Interface.h
@@ -38,7 +38,7 @@ namespace audio {
 		 */
 		class Interface {
 			protected:
-				std::vector<std::pair<enum audio::orchestra::type, Api* (*)()> > m_apiAvaillable;
+				std::vector<std::pair<std::string, Api* (*)()> > m_apiAvaillable;
 			protected:
 				audio::orchestra::Api *m_rtapi;
 			public:
@@ -50,13 +50,16 @@ namespace audio {
 					m_rtapi->setName(_name);
 				}
 				/**
-				 * @brief A static function to determine the available compiled audio APIs.
-				 * 
-				 * The values returned in the std::vector can be compared against
-				 * the enumerated list values. Note that there can be more than one
-				 * API compiled for certain operating systems.
+				 * @brief Get the list of all availlable API in the system.
+				 * @return the list of all APIs
 				 */
-				std::vector<enum audio::orchestra::type> getCompiledApi();
+				std::vector<std::string> getListApi();
+				/**
+				 * @brief Add an interface of the Possible List.
+				 * @param[in] _api Type of the interface.
+				 * @param[in] _callbackCreate API creation callback.
+				 */
+				void addInterface(const std::string& _api, Api* (*_callbackCreate)());
 				/**
 				 * @brief The class constructor.
 				 * @note the creating of the basic instance is done by Instanciate
@@ -70,19 +73,17 @@ namespace audio {
 				 */
 				virtual ~Interface();
 				/**
-				 * @brief Add an interface of the Possible List.
-				 * @param[in] _api Type of the interface.
-				 * @param[in] _callbackCreate API creation callback.
+				 * @brief Clear the current Interface
 				 */
-				void addInterface(enum audio::orchestra::type _api, Api* (*_callbackCreate)());
+				enum audio::orchestra::error clear();
 				/**
 				 * @brief Create an interface instance
 				 */
-				enum audio::orchestra::error instanciate(enum audio::orchestra::type _api = audio::orchestra::type_undefined);
+				enum audio::orchestra::error instanciate(const std::string& _api = audio::orchestra::type_undefined);
 				/**
 				 * @return the audio API specifier for the current instance of airtaudio.
 				 */
-				enum audio::orchestra::type getCurrentApi() {
+				const std::string& getCurrentApi() {
 					if (m_rtapi == nullptr) {
 						return audio::orchestra::type_undefined;
 					}
@@ -312,7 +313,7 @@ namespace audio {
 				}
 				bool isMasterOf(audio::orchestra::Interface& _interface);
 			protected:
-				void openRtApi(enum audio::orchestra::type _api);
+				void openApi(const std::string& _api);
 		};
 	}
 }
diff --git a/audio/orchestra/api/Alsa.h b/audio/orchestra/api/Alsa.h
index df06c72..a1380c1 100644
--- a/audio/orchestra/api/Alsa.h
+++ b/audio/orchestra/api/Alsa.h
@@ -18,7 +18,7 @@ namespace audio {
 				public:
 					Alsa();
 					virtual ~Alsa();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_alsa;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Android.h b/audio/orchestra/api/Android.h
index 756f58f..b390d73 100644
--- a/audio/orchestra/api/Android.h
+++ b/audio/orchestra/api/Android.h
@@ -17,7 +17,7 @@ namespace audio {
 				public:
 					Android();
 					virtual ~Android();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_java;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Asio.h b/audio/orchestra/api/Asio.h
index cebc2bf..f42526d 100644
--- a/audio/orchestra/api/Asio.h
+++ b/audio/orchestra/api/Asio.h
@@ -18,7 +18,7 @@ namespace audio {
 				public:
 					Asio();
 					virtual ~Asio();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::WINDOWS_ASIO;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Core.h b/audio/orchestra/api/Core.h
index 5ed4bd9..7791d61 100644
--- a/audio/orchestra/api/Core.h
+++ b/audio/orchestra/api/Core.h
@@ -21,7 +21,7 @@ namespace audio {
 				public:
 					Core();
 					virtual ~Core();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_coreOSX;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/CoreIos.h b/audio/orchestra/api/CoreIos.h
index 2b5142c..3c16b70 100644
--- a/audio/orchestra/api/CoreIos.h
+++ b/audio/orchestra/api/CoreIos.h
@@ -19,7 +19,7 @@ namespace audio {
 				public:
 					CoreIos();
 					virtual ~CoreIos();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_coreIOS;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Ds.h b/audio/orchestra/api/Ds.h
index 155a88c..e2bd8e1 100644
--- a/audio/orchestra/api/Ds.h
+++ b/audio/orchestra/api/Ds.h
@@ -19,7 +19,7 @@ namespace audio {
 				public:
 					Ds();
 					virtual ~Ds();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_ds;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Dummy.h b/audio/orchestra/api/Dummy.h
index e83f756..79f22bf 100644
--- a/audio/orchestra/api/Dummy.h
+++ b/audio/orchestra/api/Dummy.h
@@ -19,7 +19,7 @@ namespace audio {
 					static audio::orchestra::Api* create();
 				public:
 					Dummy();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_dummy;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Jack.h b/audio/orchestra/api/Jack.h
index 3f0683a..ea250c2 100644
--- a/audio/orchestra/api/Jack.h
+++ b/audio/orchestra/api/Jack.h
@@ -20,7 +20,7 @@ namespace audio {
 				public:
 					Jack();
 					virtual ~Jack();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_jack;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Oss.h b/audio/orchestra/api/Oss.h
index cf7f00d..aef3821 100644
--- a/audio/orchestra/api/Oss.h
+++ b/audio/orchestra/api/Oss.h
@@ -19,7 +19,7 @@ namespace audio {
 				public:
 					Oss();
 					virtual ~Oss();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_oss;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/api/Pulse.h b/audio/orchestra/api/Pulse.h
index 7748175..857a78b 100644
--- a/audio/orchestra/api/Pulse.h
+++ b/audio/orchestra/api/Pulse.h
@@ -19,7 +19,7 @@ namespace audio {
 				public:
 					Pulse();
 					virtual ~Pulse();
-					enum audio::orchestra::type getCurrentApi() {
+					const std::string& getCurrentApi() {
 						return audio::orchestra::type_pulse;
 					}
 					uint32_t getDeviceCount();
diff --git a/audio/orchestra/type.cpp b/audio/orchestra/type.cpp
index 1fe33f9..1b9bfb7 100644
--- a/audio/orchestra/type.cpp
+++ b/audio/orchestra/type.cpp
@@ -15,59 +15,14 @@
 #undef __class__
 #define __class__ "type"
 
-static const char* listType[] = {
-	"undefined",
-	"alsa",
-	"pulse",
-	"oss",
-	"jack",
-	"coreOSX",
-	"corIOS",
-	"asio",
-	"ds",
-	"java",
-	"dummy",
-	"user1",
-	"user2",
-	"user3",
-	"user4"
-};
-static int32_t listTypeSize = sizeof(listType)/sizeof(char*);
-
-
-std::ostream& audio::orchestra::operator <<(std::ostream& _os, const enum audio::orchestra::type& _obj) {
-	_os << listType[_obj];
-	return _os;
-}
-
-std::ostream& audio::orchestra::operator <<(std::ostream& _os, const std::vector<enum audio::orchestra::type>& _obj) {
-	_os << std::string("{");
-	for (size_t iii=0; iii<_obj.size(); ++iii) {
-		if (iii!=0) {
-			_os << std::string(";");
-		}
-		_os << _obj[iii];
-	}
-	_os << std::string("}");
-	return _os;
-}
-/*
-template <enum audio::format> std::string to_string(const enum audio::format& _variable) {
-	return listType[_value];
-}
-*/
-std::string audio::orchestra::getTypeString(enum audio::orchestra::type _value) {
-	return listType[_value];
-}
-
-enum audio::orchestra::type audio::orchestra::getTypeFromString(const std::string& _value) {
-	for (int32_t iii=0; iii<listTypeSize; ++iii) {
-		if (_value == listType[iii]) {
-			return static_cast<enum audio::orchestra::type>(iii);
-		}
-	}
-	if (_value == "auto") {
-		return audio::orchestra::type_undefined;
-	}
-	return audio::orchestra::type_undefined;
-}
+const std::string audio::orchestra::type_undefined = "undefined";
+const std::string audio::orchestra::type_alsa = "alsa";
+const std::string audio::orchestra::type_pulse = "pulse";
+const std::string audio::orchestra::type_oss = "oss";
+const std::string audio::orchestra::type_jack = "jack";
+const std::string audio::orchestra::type_coreOSX = "coreOSX";
+const std::string audio::orchestra::type_coreIOS = "coreIOS";
+const std::string audio::orchestra::type_asio = "asio";
+const std::string audio::orchestra::type_ds = "ds";
+const std::string audio::orchestra::type_java = "java";
+const std::string audio::orchestra::type_dummy = "dummy";
diff --git a/audio/orchestra/type.h b/audio/orchestra/type.h
index 31cfa6c..8f04ff2 100644
--- a/audio/orchestra/type.h
+++ b/audio/orchestra/type.h
@@ -17,27 +17,17 @@ namespace audio {
 		/**
 		 * @brief Audio API specifier arguments.
 		 */
-		enum type {
-			type_undefined, //!< Error API.
-			type_alsa, //!< LINUX The Advanced Linux Sound Architecture.
-			type_pulse, //!< LINUX The Linux PulseAudio.
-			type_oss, //!< LINUX The Linux Open Sound System.
-			type_jack, //!< UNIX The Jack Low-Latency Audio Server.
-			type_coreOSX, //!< Macintosh OSX Core Audio.
-			type_coreIOS, //!< Macintosh iOS Core Audio.
-			type_asio, //!< WINDOWS The Steinberg Audio Stream I/O.
-			type_ds, //!< WINDOWS The Microsoft Direct Sound.
-			type_java, //!< ANDROID Interface.
-			type_dummy, //!< Empty wrapper (non-functional).
-			type_user1, //!< User interface 1.
-			type_user2, //!< User interface 2.
-			type_user3, //!< User interface 3.
-			type_user4, //!< User interface 4.
-		};
-		std::ostream& operator <<(std::ostream& _os, const enum audio::orchestra::type& _obj);
-		std::ostream& operator <<(std::ostream& _os, const std::vector<enum audio::orchestra::type>& _obj);
-		std::string getTypeString(enum audio::orchestra::type _value);
-		enum audio::orchestra::type getTypeFromString(const std::string& _value);
+		extern const std::string type_undefined; //!< Error API.
+		extern const std::string type_alsa; //!< LINUX The Advanced Linux Sound Architecture.
+		extern const std::string type_pulse; //!< LINUX The Linux PulseAudio.
+		extern const std::string type_oss; //!< LINUX The Linux Open Sound System.
+		extern const std::string type_jack; //!< UNIX The Jack Low-Latency Audio Server.
+		extern const std::string type_coreOSX; //!< Macintosh OSX Core Audio.
+		extern const std::string type_coreIOS; //!< Macintosh iOS Core Audio.
+		extern const std::string type_asio; //!< WINDOWS The Steinberg Audio Stream I/O.
+		extern const std::string type_ds; //!< WINDOWS The Microsoft Direct Sound.
+		extern const std::string type_java; //!< ANDROID Interface.
+		extern const std::string type_dummy; //!< Empty wrapper (non-functional).
 	}
 }
 
diff --git a/lutin_audio_orchestra.py b/lutin_audio_orchestra.py
index ab6b2a3..19b4ffa 100644
--- a/lutin_audio_orchestra.py
+++ b/lutin_audio_orchestra.py
@@ -4,7 +4,7 @@ import lutin.tools as tools
 import lutin.debug as debug
 
 def get_desc():
-	return "audio_orchestra : Generic wrapper on all audio interface"
+	return "Generic wrapper on all audio interface"
 
 
 def create(target):
@@ -71,7 +71,6 @@ def create(target):
 	
 	myModule.add_export_path(tools.get_current_path(__file__))
 	
-	# add the currrent module at the 
 	return myModule
 
 
diff --git a/tools/lutin_orchestra-in.py b/tools/lutin_orchestra-in.py
new file mode 100644
index 0000000..dbb8828
--- /dev/null
+++ b/tools/lutin_orchestra-in.py
@@ -0,0 +1,19 @@
+#!/usr/bin/python
+import lutin.module as module
+import lutin.tools as tools
+import lutin.debug as debug
+
+def get_desc():
+	return "'in' tool for orchestra"
+
+
+def create(target):
+	myModule = module.Module(__file__, 'orchestra-in', 'BINARY')
+	
+	myModule.add_src_file([
+		'orchestra-in.cpp'
+		])
+	myModule.add_module_depend(['audio_orchestra', 'test-debug'])
+	return myModule
+
+
diff --git a/tools/lutin_orchestra-list.py b/tools/lutin_orchestra-list.py
new file mode 100644
index 0000000..540643e
--- /dev/null
+++ b/tools/lutin_orchestra-list.py
@@ -0,0 +1,19 @@
+#!/usr/bin/python
+import lutin.module as module
+import lutin.tools as tools
+import lutin.debug as debug
+
+def get_desc():
+	return "'list' i/o tool for orchestra"
+
+
+def create(target):
+	myModule = module.Module(__file__, 'orchestra-list', 'BINARY')
+	
+	myModule.add_src_file([
+		'orchestra-list.cpp'
+		])
+	myModule.add_module_depend(['audio_orchestra', 'test-debug'])
+	return myModule
+
+
diff --git a/tools/lutin_orchestra-out.py b/tools/lutin_orchestra-out.py
new file mode 100644
index 0000000..247b8a7
--- /dev/null
+++ b/tools/lutin_orchestra-out.py
@@ -0,0 +1,19 @@
+#!/usr/bin/python
+import lutin.module as module
+import lutin.tools as tools
+import lutin.debug as debug
+
+def get_desc():
+	return "'out' tool for orchestra"
+
+
+def create(target):
+	myModule = module.Module(__file__, 'orchestra-out', 'BINARY')
+	
+	myModule.add_src_file([
+		'orchestra-out.cpp'
+		])
+	myModule.add_module_depend(['audio_orchestra', 'test-debug'])
+	return myModule
+
+
diff --git a/tools/orchestra-in.cpp b/tools/orchestra-in.cpp
new file mode 100644
index 0000000..e69de29
diff --git a/tools/orchestra-list.cpp b/tools/orchestra-list.cpp
new file mode 100644
index 0000000..5dbb010
--- /dev/null
+++ b/tools/orchestra-list.cpp
@@ -0,0 +1,39 @@
+/** @file
+ * @author Edouard DUPIN 
+ * @copyright 2015, Edouard DUPIN, all right reserved
+ * @license APACHE v2.0 (see license file)
+ */
+
+#include <etk/etk.h>
+#include <test-debug/debug.h>
+#include <unistd.h>
+#include <audio/orchestra/Interface.h>
+
+int main(int _argc, const char **_argv) {
+	// the only one init for etk:
+	etk::init(_argc, _argv);
+	for (int32_t iii=0; iii<_argc ; ++iii) {
+		std::string data = _argv[iii];
+		if (    data == "-h"
+		     || data == "--help") {
+			std::cout << "Help : " << std::endl;
+			std::cout << "    ./xxx ---" << std::endl;
+			exit(0);
+		}
+	}
+	audio::orchestra::Interface interface;
+	std::vector<std::string> apis = interface.getListApi();
+	TEST_PRINT("Find : " << apis.size() << " apis.");
+	for (auto &it : apis) {
+		interface.instanciate(it);
+		TEST_PRINT("Device list for : '" << it << "'");
+		for (int32_t iii=0; iii<interface.getDeviceCount(); ++iii) {
+			audio::orchestra::DeviceInfo info = interface.getDeviceInfo(iii);
+			TEST_PRINT("    " << iii << " name :" << info.name);
+			info.display(2);
+		}
+		interface.clear();
+	}
+	return 0;
+}
+
diff --git a/tools/orchestra-out.cpp b/tools/orchestra-out.cpp
new file mode 100644
index 0000000..e69de29