here are the four java video formats i've found and posted to mplayer-advusers hopefully someone will get them all working in mplayer or another gpl software one day :) Mike's RE blog is interesting to read, just wish i could help more. VX30 http://www.vx30.com/ official website http://information.networkessence.net/mxs/vx30/analysis.html stolen code screenshots, analysis http://www.tliquest.net/ryan/cherryos/vx30/ hex dump and investigation of stolen gpl code in vx30 http://www.indy.org/video/Music/ for a sample html file, vx30 and meta file, and the required player Eyewonder html, a PSA about booster seats: http://cdn.eyewonder.com/100125/400136/400907/designTheme.html?videoname=boo... with the java applet: http://cdn.eyewonder.com/100125/400136/400907/rel.jar and video/audio files: http://cdn.eyewonder.com/100125/400136/400907/boosterseated_anthemdummy_30-a... http://cdn.eyewonder.com/100125/400136/400907/boosterseated_anthemdummy_30-3... vendor site: http://www.eyewonder.com some japanese name, possibly vplayer orig url: http://www.actonbb.com/contents/health/0501shape1_health/ movie files: www.actonbb.com/actonbb/0501shape1/0501shape1_01.w1 www.actonbb.com/actonbb/0501shape1/0501shape1_01.w0 java decoder files: www.actonbb.com/player/v38081/vplayer.jar www.actonbb.com/player/v38081/vplayer.cab and the emblaze format, sample here http://www.rxdesign.com/portfolio/video/emblaze/ vendor site: http://www.emblaze.com/serve/products/pc_players.asp