When the renowned Mac application company Ambrosia Software launched iToner, they probably did not imagine that they engaged in an "endless" race with Apple, maintaining iToner functionality despite iPhone firmware updates. To remind you, iToner allows you to easily transfer MP3 or AAC audio files to your iPhone, as simple as: drag, drop, and sync. Apple wanted to promote sales of ringtones on the iTunes Store, and did wish to let iPhone owners to use tracks legally purchased and available in their iTunes library to create themselves their own ringtones. Ambrosia will soon start beta testing iToner 1.0.3 which should bring full iPhone 1.1.1 compatibility.
For additional information: http://www.ambrosiasw.com/utilities/itoner/
[translation by Linathael]