Although its not the best general test, this test from Sonos (a digital audio device manufacture) is pretty fun for those who know and understand Audio and Computers. You need 18 out of 19 to pass.
http://www.sonos.com/community/digital_expert/test/
The coolest thing is that if you pass the test, and had actually owned any of the companies products they have a special support line for “digital experts” which would absolutely make my day, no more having to explain to the person on the other end of the line that I already tried the first three things on their troubleshoot list before I even thought of calling. If this sort of thing catches, it could seriously streamline support for both the user and support program.
Let me know what you guys get, when I took it last night I just scraped by with 18 / 19.
And if your’re really into this stuff it’s worth checking out their product too, if it wasn’t so darned expensive I would have them all over my house!