MP3 - cant delete songs

[Wade Smart]

08052007 1349 GMT-6 DST

I have been using my SanDisk Sansa m230 MP3 player with Fiesty without 
problems. I just drag and drop songs onto the player. I find now after 
all this time that I cant delete the songs. The support section at 
Sandisk says to delete them like you would any file but, after I delete 
all the files shown on screen - including any hidden files, it still 
shows 248mb of memory used, 19 songs still remaining - none of which I 
can locate or delete.

Anyone use this able to give me any help?

Wade