Yeah, that was my hesitation toward AC/DC. I like when music and FX are choreographed to the gameplay...AC/DC's music mostly serves as background - but it isn't really interactive with the gameplay. When I saw the first pic, I imagined something like this - when the ball loads into the cannon, the game plays "For those about to rock...." and then when you hit fire, the song continues "FIRE!!!!!! We salute you!"
That being said - my impressions from video vs. impressions actually playing it were very different. When I was playing, I was just enjoying it and jamming along to the music...I think it's definitely the type of game you have to play to get a true feeling for it. I only played it about 10 times or so...so I can't really gauge it's long term fun factor yet.
One thing that I think would help the game for guys like us, who like big Multiball starts with music/sound changes....even if the selected song kept playing, it would be nice if Steve's Devil voice gave you a big intro like "Get ready to collect the classics! It's time for ALBUM MULTIBALL!!!!" or "You ready to JAM! It's JAM MULTIBALL!!!!" Pair that w/ some crazy light FX and crowd cheers, I think that'll do the trick.