"Mej" wrote in message
...
I got a Pioneer DEH77MP for Christmas, but every time I put an MP3 cd in,
it
turns itself of then back on again and won't go any further.

I tried the same cd in my mates sony something or other and it worked fine
straight away. I tried it another mates pioneer (7400) and it does the
same
thing as mine (resets itself) What am I doing wrong?

Have you got CMR enabled?