I thought Audiosurf couldn't handle songs longer than 10 minutes. Maybe it's 15, then.
Anyway, uphills are boring, if you want real craziness I have a pure downhill race song (Party With Pinkie VIP) of 5 minutes that gets up to like 150,000 points for gold edition. It's pretty ridic.
on-topic though I have started a new game of Rome II as Carthage, implementing a lot of stuff I learned from my Seleucia and Rome games, and I have done incredibly well compared to my last Carthage attempt. I focused all of my effort on building up my infrastructures to max out income, and all of my military on Sicily so I captured Syracuse very quickly, have looted Cosentia (Rome's southern-most settlement) twice, and have liberated Magna Grecia in Taras. Completely disbanding my Iberian army and ignoring building upgrades there and in Morocco gave me enough cash for mercenaries and to fully upgrade my Corsica and Africa provinces, so now I'm relatively rich and can build armies in Iberia.