I suppose this is not the first thread you posted about this problem. Please choose next time 'post reply' if you are referring
to a problem that you described in an earlier thread instead of starting a new one. So unfortunatelly now I don't know what you've already tried to delete this file. In case you want to delete
an incomplete file you should make sure that it isn't still downloading - if so kill the download first. Then you should click on the 'Library' tab. Select the 'Incomplete' folder and there mark
the file you want to delete. Click on the 'Delete' Button below.
The file should now be deleted. If you still see it click 'Refresh'
to refresh the view.
Same procedure if you want to delete a complete file. Just click on
your 'Shared' or 'Complete' folder in the 'Library'. Of course you don't need to kill any 'Download' process.