Best $8 bucks I've spent on this phone. (could probably find it cracjked as well, but...)
Tiny, simple lil program that allows you to customize any sound on your phone.
And you download a free prog for your computer, that converts any wav, mp3, etc. into the right format and sends it right over to exactly where it needs to go via the cable.
(screw all dat SSH/WIFI/searching through folders crap!)
It'll even cycle all your custom made ringtones as well, and there's another program you can buy on their website for creating custom ringtones to send to your phone via the above mentioned program. It edits and formats them and sends them over as well.
The only thing is you need to have a jailbroken phone.
I got custom sounds on my lock/unlock, sms, battery sound, ringtones, mail... any system sound or ringtone that I want!
You send it to your phone in 2 clicks...
one to find the sound you want, the other to format it and send it over to where it needs to go.
Then just open ToneFX on your phone, go to the item you want like SMS tone, and just pick one that you sent over via your USB cable.