Complete noob here to ringtones and how to make ringtones out of downloaded files. I downloaded an MP4 or MP3 file and I wanted to make it my ringtone on the Infuse. It's not rooted, so is it possible?
On the top of this forum, on the right side, there's a link for "Search this forum." Enter the word "ringtones." You'll have several threads discussing this. It's possible and easy to use mp3s as ringtones.