VSE video audio

alright, so i have a video file and an audio file

and i want to export both into one file avi with divx codec

but here is the problem

where usually ppl have video but no audio… i have audio but no video!

any ideas? i have ffmpeg enabled

video is avi with divx codec biutrate is 2000 kb/s min is 2000 max is 9000

audio is mp3 and multiplex is enabled

iother than that i cant think of anything…

imm i looked at the file and it looks like the video info is not even in the file!, ehm, how do i add the codecS?

do sequence enabled?