I like them. There is some noticeable problems are far as blending goes (if you were to loop them). The end of intro doesn't fit the the beginning of menu, and ingame doesn't loop without a pause at the end.
But these can be solved easily I would image (a quick change at the end of the files).
So rather than focusing on those things, think about whether this might suit the game (is this release material?).
Let me know your thoughts. I'll pass them on to Dan in an email in a day or two.