AIM file sharing between a PC and a MAC?

I'm trying to let my friend browse my music folder, and I have a mac she has a pc. Is there a way to do this with iChat? And if not, I have also downloaded AIM for Macintosh but still can't get it to work. How do I make it work, or is it not possible at all?

If any additional details are required, let me know. I'll be keeping an eye on this and will update quickly if necessary. Thank you.