Ringtones to Unlocked iPhone

I just got an unlocked iPhone. I have been trying to add Ringtones, but stumped. When I download, I get a URL like this below, how do I drag this to iTunes so I can convert to AAC and the use iToner to load on the iPhone? http://www.iphonehacks.com/Cell_Phone_Ringing.aif

Thanks

You can use Garageband to create iPhone ringtones.

there are plenty of video tutorials on how to make ringtones for the iPhone on youtube...garageband is the easiest way, as opposed to using audacity and converting,converting,converting...but i know for fact there are videos and they are very detailed...

you know, you can change the .mv4 to a .mvr for itunes songs and itll show up as ringtones