From Sorentio Systems:
Soft4Boost Ringtone Creator- the best way to add individuality to your cell. Create custom ringtones from any input audio of the following formats: MP3, WAV, AMR. Take your favorite song or a soundtrack from your favorite movie. Select a small part you like or the whole file and send it to your cell phone. Make any sound a ringtone to surprise your friends and relatives. Record a wind howl, your friends sing or your kids laugh, your doorbell, or any sound you can think of and make it your ringtone.