Okay, I just got a brand new iPhone 4s. I'm loving it so far. I downloaded a free ringtone off the internet in m4r format. The audio file is 29 seconds long. I dragged it into my 10.5 iTunes library. It then automatically created a ringtones folder. The file now resides in the ringtones folder in iTunes. So far, so good. I connect my iPhone to my PC, iTunes recognized my phone and the device appears in the left hand pane. I click on the device to bring up the syncing options and I un-check everything as the only thing I want to do is add a single ringtone to my phone. With one ringtone in my ringtones folder, I clicked to check the box "sync ringtones" and got the dreaded "if you continue your single ringtone will erase all of your other ringtones" Something along those lines. All I want to do is add a single ringtone to the iPhone's current library of ringtones. Is this impossible? Earlier, I was able to create a ringtone from one of my songs in iTunes and I was able to add it to the iPhone but it's not working the same with the free ringtone that I downloaded. Please help.