Sorry, I disagree completely with previous review!
I too listen to many audiobooks. And I have particular love for mr Rudnicki's narrations. He is a careful reader and he brings to life the some wonderful and unusual books! And while he doesn't sound "spot on" in all his narrations, I'm espessially grateful for his work on Delany's books. For me they sound just right with this particular voice. The book itself is more baffling than anything else, but it's also not as bad as previos reviewer makes it. Delany is a strange author, not everyone likes his works. But Babel-17 definitely doesn't deserve a one-star review. (Also, as a side-note, there's another narration of this book on the net — for me it was unlistenable. While narrator's manner is lively, he makes voices of different people almost indistinguishable. And narration itself sounds rather… old-timey, like an old radio broadcast. But this is a matter of personal taste.)