What's wrong with these files?

I just downloaded the album Feel Good Ghosts, by Cloud Cult. The problem is that when i loaded it into Itunes, it tells me that the songs are a hell of a lot longer than normal; for instance, most of the songs are about 20 minutes long, when the itunes store says they should be about 4 minutes. And it’s not lying to me, there physically is 5 times the amount of recorded information there, but it won’t all play. Some songs do run the time that itunes store says they should, then they end and the song changes, leaving the majority of the file unplayed. But if you drag the time bar past where you’ve just heard the song play, it will repeat certain parts of the song. Where the file stops playing all depends on where you dragged the time cursor to. And some songs are even longer than itunes predicts, but have the same basic problem. Has anyone ever come across something like this, because I’m stumped.