Application: AudioRack

http://redmountainradio.com/audiorack/
Audio player for webcast/webstreaming.

How to: Classic on Intel

How to run Classic (pre OS X) apps on Intel Macs
http://www.macosxhints.com/article.php?story=20060509180914879

Application: RumLog

http://dl2rum.dyndns.org/RUMSoft/Home.html
Logging program for ham radio.

Application: Voice Candy

http://www.potionfactory.com/voicecandy/
Photo booth for audio.