An interesting idea. My new car has an MP3 player in - no need for a CD changer. Maybe I should pick half a dozen CD's at random and compile them into a collection.

Another suggestion. A friend of mine (RIP - cancer got him before his time) used to select books in alphabetical order by author. He said he read some interesting books he would not otherwise have considered using this system. May be worth a try if your CD collection is big enough