1) go to Get "DLLs Ogg Plugin". Unzip and copy to c:\program files\common files\real\plugins. Test that you can now drop an ogg into RealOne and have it play back. 2) Encode your clip with RV9 without audio: You can do this any number of ways, but I used AutoRV9, and let it complete audio conversion, and CTRL-C'd out after producer started. Then I simply edited the .avs file AutoRV9 created to remove the audio track, and then re-started the command line after also having adjusted the bitrate in the AutoRV9 rpad file down by 96 kbps. 3) Encode the .wav file with your favorite Ogg encoding tool. I used oggdropXPd to encode the audio at 96 kbps. 4) Copy the SMIL code below to its own file, and change the names of the .ogg file and .rmvb files to match yours. Also remember to change the video dimensions! 5) Sit back and enjoy RV9 with Ogg Vorbis. Please note that there will probably be audio/video synchronization issues. At least that is what I noticed after seeking to the middle of the clip. You can, however, get the Ogg plugin source code from the Helix Community link above, so please feel free to contribute any fixes and improvements you can come up with. I have not looked into the sync problem myself, or how easy it may be to fix. <smil> <head> <layout> <region id="VideoChannel1" left="0" top="0" height="352" width="640"/> </layout> </head> <body> <par title="audio video mixer test"> <video src = "mc_short_noaudio.rmvb" region="VideoChannel1"/> <audio src = "mc_short.ogg"/> </par> </body> </smil> EDIT: fixed link: it included a '.'