hi there if u cant delete the file because it is in use by another program go to incomplete in limewire and see if it is still downloding also see if u have tried to preview the file all previews start with a letter then numbers delete the preview then delete the file when the dialoge box appears press the move to recycle bin it should delete dont use the delete function in limewire which says delete from library and computer. its better to move it to the recyle bin then empty your bin or wipe it with a file wiper program there are some good ones available from cnet .com hope this was helpful let me know if u solved your problem