Stops playing through headphones after 10 or more minutes

I have a Samsung S2 and latest 3.01 player.  When I listen to a channel, the headphones will drop off and player will go silent.  I unplug the headphones and the player pauses but will not play through headphones after I plug back in and start.  I have to restart the app then it will work for another 10 - 15 minutes.  

Any ideas where I can start?

Jacques.