currupted

i have motorola L2 when i connect it with bluetooth to other phone it can exchange data but when i tried to play a song or tried to open a file that received from my freinds phone it gives message file is currupted please help me is its the fault of bluetooth or other software pboblem etc.please...

my Xp is currupted.....to reduce the load on my machine..i switched to windows classic theme ...after that my screen went Black..........nothing except the icons on desktop r visible........all the windows /menus have dissappered....may be bkoz i uninstalled styles Xp fm my pc..this may have...