Theres a song that I really wanted to make into a ringtone and I tried for two hours to get instructions about how to create a ringtone from songs in my library (this is a song that I purchased on iTunes about three years ago - an acoustic guitar version of "Slient Night"). I finally found this app and like others I couldnt get it to work. Then I did what only a desperate man will do - I followed the instructions in the help menu, and IT WORKED PERFECTLY! One thing I had to do was to check the "sync tones" button in iTunes and then sync one more time. After that I found the desired ringtone right at the top of the Ringtones menu on my phone.
SouthPoleSanta about Ringtones.