Having diffuculties with my Pioneer BDP-140

[Zman2k2]

So, I've been enjoying my pioneer player, so much so that the 30 day return policy is almost up. Just tonight however, I've discovered a problem. I'm not sure if this should be here or in the Music category, as it involves my SACD's, but I'll put it here for now.

I've discovered, while attempting to change through the different levels of my "Downward Spiral" NIN SACD, I can't change from the 5.1 mix. It says on the back of the disc case that there is 5.1, stereo and CD quality on the disc, but I can't change through. I tried my Mark Knopfler "Shangri-la" SACD and had the same problem.

Is this a known issue, and I should return the player, or am I not hitting the right buttons. I've tried pretty much every button on the remote, but none have been successful. Little help, please?