Hello Gilles, The best way to do this is as jhoskins mentions, which is to use the Windows Media Player via activeX and to play the MPEG on the media player, which can be embedded into the front panel. You might check out this example program which was submitted to our site some time ago:
<a href="http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=C033D0EFE1EF2CA6E034080020E74861&p_node=DZ52051&p_source=External">LabVIEW 6.0 WMP ActiveX Example Program</a> IMAQ for LabVIEW 6.1 cannot read MPEG files. It can input AVI files, and MPEGs can be converted to AVI using video format conversion software, if you are interested in going the IMAQ route. I hope this helps! Please let me know if I can be of further assistance. Liz F National Instruments