Good article about a tricky problem for classical music fans: iTunes and the CDDB were created for pop music. How can you best shoe-horn classical music tagging into a pop-music framework? This article has some suggestions.
Classical music, comedy and education rolled into one crazy ball of FUN! These people are hilarious!! Go on, click on that link...you *know* you want to... ;)
Chandos is a quality classical label with a decent online distribution platform (they need to hire a web designer though). They currently provide single tracks for about $.70/per track with no DRM (yay!).
This is a fun page for novice listeners. The site lists out the composers and includes short snippets of the top 100 pieces. Even if you're not an avid fan, you probably know most of these just from TV and hte movies.