That t is making Audible Noise is odd. Generally the CD can either read or it can't read. It might take multiple passes to get a section of the CD right, if it simply can't read, it shuts down. Worst case, you might get a short pause in the music stream. Very very very odd that it is stilll operating, yet random noise is being injected into the music. With in a context, that's not how CDs work.
I would most certainly check your cables and cable connections. Try wiggling the interconnect wires and see if you get any static or crackling sound. If is possible that you have a bad cable, or perhaps just a bad connection. Remove, inspect, and re-insert the cables, which I'm going to assume are RCA.
I could be that when you blew it out, you moved the CD Player and that moved the Cables to a position where they were good again.
Just one of many possibilities.