Free Make your own Internet Radio Station

Pandora
Is a free online radio station with a twist. You help program it. You name the station and select your favorite artists or songs and Pandora plays your choices and find other artists that matches your choices using the Music Genome Project to introduce you to new music.

Go and start your own station.

Update: I found a dashboard widget for Mac OS X here.

Free Backup for your Mac

SuperDuper
Is a free utility that makes a fully bootable backup of your Mac.

from the website:
You can buy a full version to unlock scheduling, Smart Update (which saves a lot of time), Sandboxes, scripting and more!

Free Add-on Makes FireFox Safer. . .

NoScript:
Extra protection for your Firefox: NoScript allows JavaScript, Java and other executable content only for trusted domains of your choice, e.g. your home-banking web site.

Free CD/DVD burning solution

CDBurnerXP Pro is a free CD/DVD burning solution.
With this software you can burn CD-R, CD-RW DVD+R/RW DVD-R/RW discs.