ffmpeg: readOutStream for Python
demo_dumpwav.py initial. not yet working...
ffmpeg: fix py readOutStream
ffmpeg: nextSongOnEof option for Python
demo_dumpwav: fixes
more on dumpwav
fixes
ffmpeg: Python: readOutStream: less hacky
Revert "ffmpeg: Python: readOutStream: less hacky"

This reverts commit 0982b253906efce6225db4c3470bffef432a4858.
stupid fix