It takes maybe 5 minutes to do. (Depending on how long it takes to burn the CD; that may take a bit longer.)
#Unrelated: I said I was a decent photographer; you be the judge: http://remijones.deviantart.com/ and http://365project.org/remirixjones/365
Step 1: Stuff You Need
-Music (obvious, I hope)
-Any kind of media player/organizer; iTunes, Windows Media Player
-Image manipulation software/drawing software; MS Paint, Photoshop, KidPix(lol)
Step 2: Create a Playlist
These are the songs you'll be burning to the disc. In iTunes, you make a playlist and click burn to disc. The discs I use hold about 17 songs. So every 17 songs I buy, I make a backup disc.
17 is about 50-90MB. If your CDs have way more space than that, do 20 instead of 17. It all depends on the space on your CDs and the size of your song files. I personally like 17.
Step 3: Burn the CD
When it finishes, remember to label your CD with the permanent marker.
Step 4: Design and Print Your Cover Art
Print and cut them out. I can't tell you the dimentions, cus I measured them wrong. I just taped the cover art into the CD case.
Step 5: All Together Now!
I kept a Photoshop file of my design so every 17 songs, I use that file as a template and replace the number and the track list.