Ok the problem is I made a data dvd disk with windows that has a few thousand wav. files on it...and i checked the dvd once it was burned to make sure the files were there.. and every thing was fine.. now my problem is a sent the dvd to a friend and he has a Mac..and when he puts the dvd in the Mac doesnt even see the folders that are burned on it to see any of the files.. so im wondering if there is a way to fix this as I do not know much about Macs..thanks in advance