Lately here on CF I've noticed an uprising in the posts on Car Audio. I've
come up with a short list of various songs you can DL to test your audio
Triple Six Mafia - Late Nite Tip (Ultimate rap-bass song)
Sarah McLachlan - Afterglow - Time (Great to test mids/highs)
Dream Theater - Another Day (It's got one heck of a Guitar)
Dream Theater - Overture 1928 (Good ole Guitar and excellent drums)
Dream Theater - Hollow Years (Slower, but good SQ test)
Tech N9ne - T9X (Another good rap song)
any Fear Factory - (for those metal nuts)
Dimmu Borgir - Puritania (Best metal ever)
Dimmu Borgir - Burn in Hell
Dimmu Borgir - Hybrid Stigmata (lots going on, see if your speakers can get it all)
The IASCA and USAC both have test tracks you can Download. I also recommend going to the realm of excursion (http://www.realmofexcursion.com/main.html) to download their sine waves and sweeps.
I've always found techno to be one of the better sound testers personally. Has all the ranges in it.
Techno does have some good stuff. But those songs are more of what 'our' populace listens to here in the States.
Song: Under the Influence
Track #: 2
On my JVC Bazooka at home...I can shake walls w/this...so for a car...it has been my benchmark song to test out headunits and speakers
AH! Good song. Cant believe I forgot the Chem bros.
you can download "bass tests" off whatever p2p network you like
i also use under the influence for my car, or anything, i set all my eq's for stereo or whatever with it. good song to test all ranges with.