Folks, thanks a bunch for all the great input:
@yage : Ooops, thanks. Not sure how to go about it but will try.
@soix and @riccitone : Interesting! But how/why does an extender help? It itself is getting the signal on wifi. I've had good signal strength and never any buffering with the Netgear until the firmware issue. I intend to either fix it or replace it with a better one, so would there be any gain from an extender?
@audioman58 : How/why a combined modem+router would be better than separate devices in terms of sound quality, or is it just to save money (not bad in itself)?
@dougthebiker & @daledeee1 vs. @yage : Interesting! So... looks like two of you are stating that sound quality (e.g., staging and clarify) can be influenced in the digital stage (other than outright failures), while I believe @yage has stated that it cannot other than outright failures . Can y'all please explain?
Thanks again!