Any one heard "The Five Browns"?

I heard this family of 5 pianists on the TV the other day. I was intrigued, Piano 10 hands on 5 Steinways! They sounded great. I've located their CD, but to my dismay it is recorded on Dual Disc. Has anyone bought and listened to this? One side is 5.1 the other CD (not) Redbook? This maybe a classical piano treat and a real test of a systems dynamics if recorded properly! Classical/Romantic seems to be their forte at this time.