I agree. Rather than the bigger effect it has in the station (with a proper sound system), the Oblivion music on top of Rehydrator sounds like somebody playing bedroom-produced D&B on their patio.
Maybe it sounded a bit dead before, but playing music around the drop wasn't the best choice. Alton Towers fans only like it because 'its the Oblivion' music, rather than because it sounds good or has any effect in that location.
I really think the ambiant track from Oblivion's queue would be a much better background touch if anything was going to go there. The best sound in that area will always be the drop!
I just remembered the Black Hole music did actually go from there, it now only plays around Enterprise, which isn't half as bad