Actually, those links in the book don't work for me either at the moment. But the file you wanted is available in mirrors such as this one...
http://alsa.cybermirror.org/lib/
I usually install only alsa-utils and alsa-lib. The new version of alsa-utils is in the ../utils directory of that same place...
http://alsa.cybermirror.org/utils/
I downloaded those and checked their hashes against the hashes in the book.
If you already installed the previous version, I would just stick with that. It's working fine for me.