http://www.cdrlabel.com/
I've been using this for a while, and have enjoyed making my inserts with it. The hardest part is cutting out the insert when you're done, but my kindergarten training is really paying off here.
The best part is if you are lazy or in a hurry, you can almost instantly get an insert with all the songs/titles on it, or you can take your time and add pics, backgrounds, spine comments, etc. You can make inserts for slimline cases, regular cases, DVD cases or round cases.
I also discovered I can put one of my discs w/ fotos in, and it will make a label with the titles of my fotos on it! It sure beats scrawling 'Pics, 11-04' on the CD itself. Makes finding pics a whole lot easier. If you have discs w/ hundreds of MP3s on it, I imagine this program would be a godsend.
It's free for the first 10 times, and then it's only $15. Well worth it, imo. I wish I knew how to post pics here so I could show you a label or two that I've done, but...
Joe Bob says check it out!
fp