SVCD with two Audio Tracks

[The Dead Poet]

I have some .avi Files recorded from a Canon Digital IXUS 300. Now I would like to put these on a SVCD.
The only problem I am encountering is, that I would like to have 2 Audio Tracks: one primary with an MP3 Background Music and a secondary with the Original voices from the .avi files.

Could you please help me and tell me, which way is the best to do this?
Thanks Alot!

[adam]

Encode each audio stream separately. You can't use mp3 audio in svcds. You'll have to encode it to mp2.

Take your 2 audio streams and your video stream and multiplex them using bbmpeg. You can switch between the audio tracks using the audio button on your dvd remote. As far as I know there is no software player which will allow you to play both audio streams.