Thanks everyone, this is EXACTLY what I was looking for. I was beginning to lose hope on this thread
Here's what I put on my demo CD that I tried last week that seemed to work well:
Madonna - Sorry
Darude - Sandstorm
Evanescence - Bring Me To Life
Faithless - Drifting Away
Linkin Park - In The End
Linkin Park - Numb
Robert Miles - Children [dream version]
Symphony No.5, Op.67 - C minor I - Allegro con brio
Symphony No. 8, F major Op.93 IV - Allegro vivace
Tchaikovsky - Overture
Tchaikovsky - Le Chocolat (The Spanish Dance)
Tchaikovsky - Le Tea (The Chinese Dance)
Tchaikovsky - Trepak (The Russian Dance)
Tchaikovsky - Variation 1- Tarentula
Tchaikovsky - Final Waltz And Apotheosis
Tchaikovsky - 1812 Festival Overture
I really like Take 5, however I found it to be a little too slow and lacking in variety for a test song. There's rarely more than one instrument played so since I don't have hours per speaker set to try I opted out of that one. I wanted things that were busy and had a lot going on (at times) with a few slower/single instrument parts.
I'll try to dig up some of the music that you guys suggested!
I also picked up 2 Opus HDCDs (20th anniversary special and 5th version) as well as 2 Jazz DVD-As (Soular energy and Monty Alexander/Ray Brown/Herb Ellis trio) which also seem to have a nice wide variety of musical options.
Thanks again everyone!