John, you may have to take it apart and look at the hold switch . There is a little tab on the slider where the switch fits in. It may have come off, or broken off. instructions are [http://www.rapidrepair.com/guides/zune2%2080gb/Zune2-80GB-Take-Apart-Guide.htm|here] and the part is available [http://www.repairsuniverse.com/microsoft-zune-80gb-head-phone-jack-hold-switch.html|here] Good Luck.