ZVM keeps changing to radio when earphones are connected

[MartyMac]

Hi all, completely new to this so forgive me if I don't get this completely right or include all the necessary information but I would appreciate any help I can get. I have had quite an extensive look at previous posts and can't see anything similar.

I have a Zen Vision M which has never caused me any problems at all and it is the second Zen player I have had.

All of a sudden whenever I connect earphones it tries to change to the radio and then kind of flips back and forth between that and the song I would be trying to play. Not only that but when the earphones are connected and it does decide to play, it sometimes fast forwards through the song without me touching it. Also, when it does play the song I want it to, it is very difficult to hear the singer.

I have connected it to my pc without a problem and played songs through it without any issues too.

Any ideas or has it just decided to give up?