Can someone make sure my modified circuit is correct?

Can I just use a 5v regulator to power this or must I use the special power supply?


www.bright.net/~jarc/sch_mega.JPG

Anyone?

I have a Pioneer head unit that does not have an "aux" mode so I have to play my line in through the "M-CD" mode. I have made my +right and +left connection along with a common ground, but I get no sound on "M-CD" so I figure I have to trick the head unit into thinking there is a CD changer connected in order to get the head unit to accept the line-in signal.

Is there any simple mod to do this or must I use an emulator?