Apple today released an informational note about creating custom ringtones in GarageBand 4.1.1. "With GarageBand 4.1.1 you can export your original song, your original audio recordings, or use Apple Loops and iLife jingles to create a custom ringtone for your iPhone," the company says. Users need GarageBand 4.1.1, iTunes 7.5 or later, and an iPhone with firmware version 1.1.2 or later. The process involves setting up a cycle region that covers the desired area of a song to use in a GarageBand song, which must be 40 seconds or less in length.
Once the cycle area is set, users simply choose the 'Send Ringtone to iTunes' menu item under the 'Share' menu.
Troubleshooting
In the event that issues arise creating or syncing ringtones, Apple offers two suggestions to repair the issue: