HTTrack follows links,  not drop-down menus

 Try using Links/SiteMap Page: 
 Go To: 
 <http://interesting.100freemb.com/splendidtable-publicradio>-
org.html
   have HTTrack follow this (or a copy without ads) 

OR

 Try including the URLs in the menu:  
 Go to: 
 <http://interesting.100freemb.com/splendidtable-publicradio>-
org.txt
  copy URLs to put in Web Addresses for project

Either way set:
 Option>>Limits>>mirror depth >2 external 
 (how much >2 depends on # of sub-levels you want)