iRinger Turns Music and Video Files into iPhone Ringtones

via LifeHacker

Windows only: Desktop app iRinger converts any video or music file into an iPhone ringtone, including YouTube videos. You already saw how to make a ringtone using only iTunes, but iRinger brings audio effects (like fade in and out, flanger, and delay) and video support to its single, simple interface. You can download any YouTube clip, for example, and import it into iRinger to create a tone.

From http://www.iringer.net/:

Convert virtually any audio format into an iPhone ringtone

Extracts audio out of video

Choose which section of the audio you want to hear

Adjust ringtone length, volume, fade in, fade out and loop gap

Export to iPhone ringtone format and import right into iTunes

Export to iPhone using SCP/SFTP and skip using iTunes

Use audio effects: Delay, Flanger, Boost, Reverse, etc.