A: Replay Music is a shareware program (free to try, $49.95 to buy) that lets you record any form of streaming audio and save it as an MP3 file. The program listens for pauses between songs and uses them to break music into separate tracks, but this often doesn't work well when recording Internet radio, since programmers often use a fade out and fade in between songs, with no clear break.
There are, however, many editing programs that will let you break up tracks. Most CD-writing packages, such as Roxio EasyMedia Creator 7 ($80) include simple track editors. You load an MP3 file, select a section of it in the graphical waveform display, then save the selection as a new file.
LISTENING RIGHTS. For faster editing and more precise control, you might want to consider a more professional editor. A good one to try is the forthrightly named Audio Editor ($25), downloadable from www.e-soft.co.uk. It can load MP3 or Windows audio (.wav) files and save selections in either format.
A note on the rights issues involved in recording: Under U.S. copyright law, it's generally regarded as fair use for you to record broadcast music or to make copies of music you own, provided that the recordings are for personal use only. However, recording may violate the license agreements of subscription services such as RealNetworks' Rhapsody, which allow you to play music only as long as you maintain your subscription. Wildstrom is Technology & You columnist for BusinessWeek