| | Duplicate files
Have you tried power cycling the BB after deleting the files? I've never seen it happen where my deleted files are still on the BB. I've only seen where apps needed a power cycle (remove battery and replace) to be removed from the home screen. I would think that music files should be alot easier to remove.
When you connect your BB to your PC are you using the DM to delete the files or just Windows Explorer? I would recommend using Windows Explorer.
As for the notifications, yes. Set your profiles to mute and not vibrate for messages and your should get the desired effect. Unless of course you don't even want to know that you are getting emails at all. Then you might have to manually reconcile from your BB or something like that. The whole point of a BB is to be constatntly and continually be in touch with your "parent" email system.