THis little ditty works like a charm. I downloaded an MP3 ringtone from Mobiles24.com then opened iPhoneRing Importer, navigated to my new MP3 file and whamo! It even placed the file with the correct suffix into the correct folder. All I had to do then was sync the iPhone.
An English localization would be helpful.
This is a good application. rated 3 for French only, otherwise all 5s.