Motion Switch

I try to have the music starts to play when I enter the bathroom (and / or turning on the light switch).
I thought the motion sensor that activates an electrical socket into which a CD player can be plugged in. However, sending power to the CD player does not press the play button. Jamming the play button does not work - music does not start when the device is on.
Ideas?
Thank you

OK, you get a remote control. Expanding contacts play a double canvas that goes to a mini relay, the relay can connect to a battery operated light cheap motion sensor. The IR remote can be mounted in most places in the bathroom. You need to do some fine welding and get a low voltage low current relay. The power for the player should come with the light switch turns off when you leave. Total cost about $ 10-20.

Not without a controller RS-232 interface for external CD drive. What probably cost more than the CD.