you could try copying the link and opening it jdownloader.
That sometimes works, it works for da U-tubez.
**************UPDATE**************************************
but not for this.
I can't even get the files to play :-(
**************UPDATE**************************************
Got it to play in a different browser. Jdownloader can see and download the Les Mis video and the anything goes Mp3 but not the audiobook files.
************************UPDATE********************************
Using soundflower I have figured out how to funnel my speaker output to audacity and record it. So it can be done. It's currently 230am and I have just had a difficult evening with the squeeze (sauced again) but I'll see what I can do.