Nokia N900 :: Album Cover Art Image Still Remains?

Using the MP3Tag program on my PC, I added an album cover (from my own jpeg image) then transferred it to the N900. Worked fine. Later I wanted to change the cover so deleted the original via the the MP3Tag program and transferred to the N900, but the original image was still used by the N900 media player. I even deleted the N900 folder containing this album before re-transferring it from the PC. I also tried searching the N900 while attached to the PC in Mass Storage mode and found nothing, and I searched ALL folders, files and file types, hidden and not, on the entire device, and it was still not to be found (yes, including the localmediaart folder).So even though I deleted the original image in the MP3Tag program's metadata files and on the N900 itself, that first cover art image still remains somewhere. I do know there are some files not visible/searchable on the N900 and that must be where this image remains. I did solve the problem in a undesirable way by re-naming the album in MP3Tag, then the new art appeared on the N900.Any ideas on how to truly delete a file on the N900?