I recently found a series of CDs which are ostensibly for helping performers with audition excerpts, called "Orchestral Excerpts for ____" (fill in with instrument name, they have most of the woodwind and Brass and some strings). I figured this could be an interesting resource for anyone who wants to learn more about what instruments can and can't do.
The person on the CD walks you through how they play each excerpt, and then plays each one. The CDs don't provide music for you, however.
Anyway, I thought I'd share this with you guys in case it might help anyone.