Was that album ripped on the B2? Or did you rip it on your computer and then Import it to the B2? I ask because when ripped on the B2, the track numbers are added automatically. But if ripped on the computer, unless you have the settings right for your ripping program, the track numbers may not be added.
When you view the track list for the album playing on the WebUI in the lower right corner, are the tracks listed in the proper order?
You're correct about the shuffle button: gray=Off.