I've been trying to work out this audio project I have. There are a TON of audio related stuff in CPAN and variously scattered on the web but I can't come close to figuring out a way to do what I need. I hope that someone out there has faced a similar problem and can offer a suggestion.

I have four .wav files that I need to combine into a single mp3 file. This is sort of like where you have a 4 track recorder and you downmix it to a single track for mono playback. Like the mixer analog I mentioned, I need to be able to vary the volume levels of each of the 4 track independently.

Oh, and to make it harder, I need something that should have a chance to compile on windowsXP :(

This is for a web services project where people will mix their own tracks and create mp3 files of their created works, so it has to be something that can run on a web server and not take the box down. I can afford a big box, but I am expecting loads of up to 3-8 submissions per second.

Help.