You didn't get my point:

IMO it is a problem of media_play, not of sound file or video file.
snd_play doesn't have such problems, but it is only for sound files.

http://www.puppenheim.org/
http://www.wuerfels-welt.de
Old Game Tutorial: http://www.puppenheim.org/MITutorial.zip
Free Game Editor: http://puppenheim.org/AlienalsWeihnachtsmann.zip
http://www.puppenheim.org/blender_starting_main_settings.txt