I have downloaded an app designed for setting a part of a song as your ringtone. The song shows up in my phone's music folder, but it doesn't show up in the mp3 ringtone app. The app compiles a list entitled "All Available Music," but all that shows up on that list is my voicemails. There was a suggestion to: "Play the track you want to use on the default music player. Whilst playing hit the menu button and then choose set as ringtone." I tried that but it didn't work; the song still doesn't show up as a potential ringtone. Any help or advice would be greatly appreciated!