I figured it out. I burned all of the music to a CD - then put each tune back into iTunes. When they were downloaded from the Apple Store, they came down as Mp3 files. When I burned them to the CD, they became aif files, which worked.
Fortunately, this worked, even though it was a little work, but it will do until Apple does a fix on the iTunes upgrade.
Wish they would check them a little more before they release them.
Kathy : -(