I am still using my older ZVM to start off with. Anyways, using Windows I first deleted all my music library. Then when I put new music on it, the old stuff was still there. So then I deleted it using Creative MediaSource 5 (CMS5). Still there. So I did a disk cleanup and format. Thought it would be gone but at least some music previously deleted is still there. It did not show up in CMS5 when I put new music on after the format. I am confused and not sure if this is a faulty player or I am doing something wrong????