Feature sound ycam

adam. please check, merge and PR to the OF repo.
I'm commiting several fixes that I did during the last days. Now everything works as expected, this means that there's no more dependence  for the  FMod player. Steaming files works fine (it was due to a weird problem that I had with initing ofSoundPlayer objects and pushing them into a vector that I wasn't able to play sound on different instances of this players).
TODOs: 
ofSoundFile
-write files: As of now I'm working on the wave file writing using the code that was in ofxSyntth, yet I think that it should be handled by system libs. 
-read ID3 tags.
-read bitdepth from file (I guess that modding the audiodecoder lib is the way to go).
ofSoundStream
-adding a dummy output that pull audio from a chain connected to an input but not to the output. (someone mentioned something about using fast events. poco maybe?)

General:
FFT class. FFT was being done by FMOD on files only. Which would be the best approach?

I'm working on some new examples. the existing ones all work as expected.

I think that this is all. Hope I'm not missing anything.
Check this out and let me know.

All the best!