WE Branch Fanatic
Have you tried looking at the data on the cd in explorer/my computer. Often the copy protected cds will play fine on "normal" cd players i.e. not computers, but are actually data disks as well, which actually have a player included on the disk that needs to be run in order to listen to the disk on a computer. this normally autoplays on insertion of the disk, but will not play through a player such as mediaplayer.
If you look at the cd and there is an application there this is normally the player, double click and hey presto music, but no ability to rip and include in your library. (boo hiss copy protection)
THere are ways round this, but seeing as they involve breaking the copy protection I wont detail how to here.
Cheers