I had the honor to get to go see Wheel in Charleston. I too noticed in the audience that the music cues were different.
My grandmother and I got tickets to see the Country Music Stars Week on Satuday the 13th in January. We ordered tickets to the early tapings and got them. After they did the first two tapings, a lady came up to us and handed us two tickets for the afternoon taping. So, we got to see Monday's, Tuesday's, Thursday's, and Friday's tapings. We missed Wednesday's taping so we could get someting to eat(we were starving) and get back in line for the other two tapings. I'm not going to say what happened, but they were VERY good episodes! Once again, no spoilers, but watch the episode that will air on the 13th- something very interesting happens!
BTW, if Wheel ever comes near your hometown, I strongly encourage you going to see it. It's worth it! Also, just as a side note, the set looks a LOT smaller in person than it does on TV. And Vanna looks even more hot in peroson!