Why is this happening??

Why can’t i earse any music off the Sansa mp3 player?

it shows i dont have any on file but i can play music…its beeing really dumb! and i need some help because im trying to get a few songs off because i have double of the same songs sometimes through the playlist but i have tried everything to take it off but it does show up that i have any music on when i check out the library on Windows. But i unplug it and all the files are still there ( I DONT WANT THEM!!!)

press the options menu on a song and then go to remove song. did you try that?