Algodoo

What to do:
In the top left of the screen drag the button to On (screen is off when it's black), now press I to open/close (toggled) the cd reader, then just drag the first CD (from the hole I left on the CD case) and lay it on the circle shaped box where there is written CD Player: now press I and drag the red box of the disk in the middle of the two green boxes, to "activate" disk number 1 press 1, to "activate" disk number 2 press 2 (both toggled), to start/stop (toggled) press enter (if you don't activate a disk it won't work). Just an experiment, nothing special, but rate and comment if you want me to improve it

Ps: to prevent lag I suggest you to deactivate a CD after you read it