Brittondave, I had another think about this and the background noise may not be just at the gaps in tracks, but there all the time, hidden by the music. Two suggestions, is it a laptop you are using? If so try it with battery power only. If the noise goes away you may have a ground loop issue. If so, go onto Amazon and search ground loop and you find plenty for under £10. It is designed to remove/reduce background hiss caused by interference between electrical items.