My Sansa MP3 player is messed up. PLZ help me?

i have the Sansa MP3 player, e200, 4gb. (e260 is the model number for the 4gb version.) I can transfer videos and photos to the MP3 using the media converter with no problems, but transfering music is the problem. I reseted the MP3 and formated it because one time i wanted to put a song on it and it kept saying error, so i deleted a couple of songs to see if it was just the song, and it messed up and kept freezing everytime i pluged it in my PC and tried to sync a song. I then restarted it and formatted it. Now it wont let me sync a song on my MP3 without windows media saying error. Also i went on my computer and it shows some song on my MP3 but yet i cant access it on the MP3 or even deleted it. When i delet it on my computer it just says, unablew to delete, either you unplugged the MP3 or it stop resonding. This is a serious problem PLZ if you have any info or even heard of the problem PLZ tell!! PS. I can format my MP3 on window media but not my computer, it says unable to

My Sansa MP3 player is messed up. PLZ help me?
I have a Sansa and I had a similar problem. I transfered a song onto it but when I went to play it, it would say bad track. I tried to delete it but it wouldn't go away. What worked for me was I went to system folder and deleted the database (PP5000.dat) and after it just rebuilds the database without the corrupted files. I'm not sure if this is related to your problem but maybe it'll help.