How will this work? With Ifuntastic will attempting to add ringtones kill my phone? Will the fact that i have a contract mean my youtube and other stuff will keep working? Should i bother risking it or wait?

The stuff you guys have done is great. Ive been following avidly for about a month now. Thanks if you can help, no worries if you can't.

Maybe clarification will help.
I have: PowerPC OS X
IPhone with standard AT&T IPhone contract.

I want: to add custom ringtones.

Is there a method available yet or is it restricted to Intel Macs or unlocked/non contract phones? Will the available methods kill my phone if I try them?

All i need is confirmation that it will work / not give me an ibrick.

Thanks!