Radio No sound from 3 speakers ( Wiring OK) And random song flipping

the delco CD player in my car sometimes wont even come on. but recently when using it, only 1 of the 4 speakers seem to work and the other 3 Buzz really loud . When the radio first warms up the channels AM/FM and cd will just change at random intervals without warning.

(The unit also seems to get very hot)