Free Loops

I’ve been playing around with Garageband quite a bit lately, and having a good time. I’ve started to look for other loops I can use, but the problem is, all the “free loops” I’m finding out there always say something like this:

All of our free Garageband loops are free for personal use.

And that’s it. I mean “Personal Use” doesn’t mean a lot to me. (I assume it means non-commercial, but is that just my assumption? Can I freely publish works I create with these “free” loops?) I want things laid out in terms I can easily understand, perhaps using the Creative Commons licenses. Is there a listing of Apple Loops somewhere that are available with CC licenses? So I can easily see what is attribution, or non-commercial, etc?