I'm using metal storage racks that I got at Linens&Things (which I noticed you have in Los Angeles also).

Here is the DVD rack which holds up to 150 DVDs and measures 18.5" x 5.5" x 45" for $29.99.

Here is the CD rack which holds up to 180 CDs and measures 11" x 5.5" x 43.5" for $19.99.

Here are a few more choices.

David