Hands shaking... headache... brain fog... internet withdrawal symptoms? Nine days with no internet makes one weak.
The aforementioned modem (which I mistakenly referred to as a "router") finally quit, and I was forced to (gasp!) go to the public library to find another one on eBay. And then I had to wait for it to arrive. The seller included a setup CD for the wrong modem. Another trip to the library for some necessary info (the modem's default user name and password, OpenDNS server addresses, etc.) And now, we are back in business.
I can listen to www.theclassicalstation.org again!
I think I'll go do a Synaptic update.