If it's a protected file you've purchased, good luck with that. Otherwise, most formats will work just dragging and dropping into the ringtone folder on your SD. If it doesn't play, use the following program to reformat it. There's many that will work, it's up to you which one to choose.
I find it hard to believe someone can find CrackBerry using Google,
yet couldn't find their "heat seeking moisture missile" in a speedo once they get here.
Posted from my CrackBerry at wapforums.crackberry.com