ffmpeg: nicer debug output
ffmpeg: nicer debug outputr
ffmpeg: another unlock
ffmpeg: stream: differ between playerTimePos and readerTimePos
ffmpeg: debug error output
some extra handling at quit. hopefully fixes a deadlock where doInitialFill hangs in do_in_mainthread
ffmpeg: another debug msg
ffmpeg: force seek to start before opening
ffmpeg: safety by making some calls (getNextSong, openPeekInStreams, InStream::open) exclusive
gui cocoa: some optimization. late building of list item objects