Hi, I have written a small app in C# that uses oggdsf to transcode to Ogg Theora on Windows. I thought some of you might find it useful. You can download it from: http://www.a2ii.com/tech/directx/TransTheora.zip Cheers, -daniel ps. it will only handle files with a single audio and/or video stream _________________________________________________________________ Win a trip for four to a concert anywhere in the world! http://www.mobilelivetour.ca/