fBaseSoundStream: added getters for input and output
ofBasicSoundPlayer: now inherits from ofSoundObject instead of ofBaseSoundOutput. Automatically inits the global soundstream if it is not inited yet. Auto connects to  ofSystemSoundMixer.
ofPASoundStream: added getters for input and output
ofRtAudioSoundStream: added getters for input and output
ofSoundFile: added getPath() method
ofSoundMixer: complete rewrite. Super simplification. Now it is just a simple summing mixer. Only master volume and master pan parameters.
ofSoundObject: added disconnect(), disconnectInput(), getInput() methods. Added protected pointer to output object. Overriden setInput() method.
ofSoundPlayer: implemented getIsLooping() method.
ofSoundStream: added getters for input and output. Removed soundStreamInput and soundStreamOutput global objects, replaced by globalSoundStream: added ofGetSoundStream() global function. globalSoundStream auto connects to ofSystemSoundMixer.
Merge pull request #7 from roymacdonald/feature-sound-ycam

Feature sound ycam