Random Ringtones Are Playing :(

[scaryhumor]

I transfered the ringtones off my EVO 4G, and put them on the 3D's SD card. I've only assigned a general ringtone for all callers, some Black Eyed Peas. Yet when one of my contacts call, it's picking random ringtones from the new ones I added. Most recently, some AC / DC. Highway to Hell to be exact. I don't wish to think something demonic is involved here... but... Anyone?