ipplesandbininnis,
To the best of my knowledge, you are free to use all the content that comes with iLife '06 any way you like.
The material from Freeplay Music that QuickTime Kirk is referring to would have to be licensed for certain uses. You can find out more on their website.
http://freeplaymusic.com/
At one time Apple did provide access to .Mac members to much of the Freeplay catalog. Now it's accessible to anyone though the Freeplay website.
However, Freeplay's licensing rules don't apply to the content that Apple provides on the iLife disks.
You can find the iLife license agreement here:
http://www.apple.com/legal/sla/
Matt