Hi, well, you don't need to mount audio cd's to play them. The cd player will mount them itself. You may have to check a couple of things here to se why cd's are not playing. First,c check all your mixer settings and test your sound card with a wav file, mp3,or something like that. Secondly, check to make sure your cdrom is connected to your sound card by a audio cable. If this cable is loose or disconnected it will be the reason for no sound. Then, if all is well start workbone and I believe you would press the 6 or 7 number key to start playing a cd. number 6 or the number 7 x
