I am having the same issue with multiple "join hangout" notification sounds populating in the music folder of my alarms. when i browsed to the notification folder, only 2 were listed with slightly different names. i erased both, but i still have 30 of these sounds populating my music list. any other ideas? besides reset device, i can deal if that's the case...
hokay, so.. more research, i found out that you can have several folders called "notifications" or "ringtones" anywhere on the sd and regardless of the path it can cause duplicates. but i checked this as well and i really only have one copy of each file name (when hooking up via usb and browsing). Is there a log file somewhere that possibly dictates a list of music?
it seems that the instances of duplicates directly coincides with the amount of failed attempts i have had to sync to pc using HTC sync manager. using a windows 7 pro 64 bit machine, htc sync never sync'd successfully and fails to recognize device in most cases, so just stopped trying after awhile, even with help from htc.
just want these files gone...