Ringtone downloads for mobile phones have become a multi-million dollar business. Ringtone Maker ($29) allows you to produce your own custom ringtones by importing music and sounds from CDs, mp3s, WAV files, and other digital sources, and then edit and process them with a 4-track recorder/editor. You can also add effects (echo, compression, distortion, filtering), match tempos, and blend in sounds from Ringtone Maker’s onboard sound-effect and music-loop libraries. Completed ringtones can be transferred to your phone using Infrared, Bluetooth, or USB. magix.com.