To use these ringtones, especially if they are over 30 secs long, save them to your pc (or Mac) and open them using some sort of editing software. I use a Mac and garageband. When I import the song it has an option to send to iTunes and I can make the tone 30 secs long. Or save the song to your Pc or Mac and just go to phonezoo.com and edit it there.
aye theres a way u can get free ringtones for the iPhone and iPhone 3G...all u need is iTunes. heres the link
http://www.intomobile.com/2008/10/07/iphone-ringtones-create-free-iphone-ringtones-using-itunes-8.html
I love my iPhone. This is my second one because someone stole my first one. I went back to using my blackberry and I hated it! I paid double what I paid the first time. I learned my lesson, everything is password protected and locked by password. I dare someone to steal this one!
http://www.intomobile.com/2008/10/07/iphone-ringtones-create-free-iphone-ringtones-using-itunes-8.html