The following seems to be the suggested way online to delete ringtones off Motorola Droid:
Settings>Applications>Mangage Applications>DRM Protected Content Storage Then press Clear Data
But my Droid (that I bought yesterday) doesn't have the DRM Protected Content Storage as an option. Also, when I push the menu button between home and back it doesn't give me an option to display all apps. I just want to know how to get around this to delete the ringtones. Thanks for any help.