My friend just sent me an audacity file(.aup) but i can't seem to open it in garageband or itunes. Is there any other program that allows to open it other than audacity?

Btw, I'm using a Mac.

Gibson SG supreme
Fender Cyclone
^ Yep thats correct

have your friend send you the MP3 but you wont be able to edit it at all since it will be mixed down at that point

if you want to use Audacity and its files you must get a PC
okay, thanks guys. I got him to send me the mp3
Gibson SG supreme
Fender Cyclone