Support for INFO tag in wav

The WAV demuxer does not support the tags inside WAV, for artist and similar data. They are in the INFO part of the LIST chunk.

Spec is here: http://www.tactilemedia.com/info/MCI_Control_Info.html http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/Docs/riffmci.pdf http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html

Sample will be attached.