Paganin's Caprices are very fun - very "pop" for their time

You could give the iTunes Store (
www.itunes.com), Napster (
www.napster.com) or another "Pay per Track" store a try. You could most likely find a high quality track for $0.99. Itzhak Perlman does an incredible job with the virtuostic tune. I found a tape (yup - a real audio tape!) at the local library a few years ago if you don't want to worry about an online store.
Or if you just need a simple Midi version of the tune, a Google search should pull up something for free.