Text file with song name and corresponding image, then do a loadvars in action script.
I can't remember the syntax coz it's been a while since I have used flash .. should start again soon me thinks.
But anyways one you get the variables it's really easy to do..
Text file should be in format:
track01 = "images/somebands_image.gif"
track02 = "images/anotherbands_image.gif"
OR, do you mean that you want it to load track_01.gif like you do with the mp3s?
You can do loadmovie or loadclip for that I think... buh I'll have to open flash up in a few mins.
Omnis mico antequam dominus Spookster!