In my experience, iTunes imports multi-disc albums as separate titles (such as Rock in Rio Disc 1, Rock in Rio Disc 2). If you want to combine them, select all tracks on all discs, control-click, select get info, go to the Info tab and and give them the same name in the album entry (such as "Rock in Rio"). Before doing this, make sure that each disc is correctly labeled (1 of 2, 2 of 2, etc.), so the tracks don't get mixed up. They should now appear as one album. If they don't, make sure that the "part of a compilation" box is either checked or unchecked for all discs.
While I was distracted by the Super Bowl in mid-reply, you answered it more clearly and succinctly Loge!