TODO for mplayerxp:

- replace network support with using of libavformat
- implement distributed video playback with using of PVM. (need volunteers)
- run filters in independent threads (useful for encoding)
- use original wine instead of loader. (adapt DMO_filter.so for wine)
- redesign demux_mkv and other in demux_asf like manner. (will allow to avoid 1
  unnecessary memcpy for input video bandwidth)
- remove DEMUXER_TYPE_* and STREAMTYPE_* (make modules in libmpdemux more
  independent ones)