I was commenting on the fact that Cedar Fair should keep up with Six Flags in this area, I realize that they are two separate entities. Six Flags is restructuring debt but still has great parks and is trying to make a come back.
In my opinion SF put some weird content on all the audio systems they've installed. Overall I think that when audio is done right it adds a lot to the coaster. The Rock'n'Roller Coaster at WDW certainly did a good job, and so did Freestyle Music Park (Hardrock).
Cedar Fair doesn't do much theming, but they did a good job with it on TTD at CP. The Backlot Stunt Coaster (Italian Job) at KD originally had audio and it added something to an otherwise pretty boring ride.
Just saying, I think audio can add a really good element to a coaster if they do it right.