*if you have a Motorola Backflip, to use an MP3 file as your ringtone just connect your USB, choose disk drive, and then use your Mac or PC to create a new root-level folder called "ringtones". Drag and drop the above radioaddec09.mp3 file into that folder, then disconnect your USB. Now open your phone, click on Settings, Select Ringtones, then choose radioaddec09.mp3.