Hi All,

Saw this today:

http://www.soundonsound.com/news?NewsID=8335

An interactive rendition of Rimsky-Korsakov's Principles of
Orchestration.  Lots of Flash pieces for showing scores and playing
back audio rendered with the Garritan orchestra samples.  Free!  Only
up to chapter 4 now, but looks like he intends to do the whole book.

steven