I have to admit, after upgrading my source of sound and replaying Season 1, I, for the first time, noticed (prominently) the lack of sound quality. (If you remember, I was one of the few who defended Telltale's decision).
I'd lie if I'd say it did not bother me. But as CaptainXax said, the music quality is top notch, and the dialog more than make up for it!
Max: It's a metaphor!
Sam: You don't even know what that means!
Max: Yes I do! It's like a metal floor, without the L's.