Entire game is broken

[Absolutionz]

Just spent a whole fucking 3 hours getting the my speakers to work with this game only to find that all the CDLC that I installed doesn't play. I select the song, hit play, tune the guitar, then nothing. Can't even exit the sheet music-less screen. Then the tuner is broken, apparently, because it keeps having me turn each peg down a lot for every song. For example I'll play a normal song, and it'll have me turn each peg down 300 points, then when I go to do the song again I have to do another 300 points even though I just tuned it to the song. What the fuck is going on here?

[Absolutionz]

And yes, this is a legal copy bought off steam. I run W7, followed all the instructions on the how-to video here as well.

[The Troglodyte]

Make sure you have the dll file from the CDLC tutorial.

[Teinashu]

And to play cdlc be sure you own Cherub Rock.