Great use for that old drive! MuCoP allows you to play your favourite music CDs on an “old” PC CDROM drive, instead of throwing it away. It consists of the bare essentials: a PIC microcontroller (16F877), 6 push-buttons, stereo audio amplifier (TDA2822M) and a few discrete components, not forgetting the IDE CDROM drive. Link.
CDROM drive as a Music Player