Installing a stereo in my garage. Suggestions?

I share your love of WW as well, and although I don't seem to be getting any project time lately, I do love music in the shop. I bought a Denon receiver and a pair of Energy speakers. I have speakers mounted upside down close to the ceiling and get very good bass response. I did buy them new a number of years ago from a dealer selling outdated inventory and saved some that way. But I would think you could find a good used receiver and speakers to start and build from there. I find that when I am working that the quality of music becomes a non issue as I am trying to make things fit and keep my skin intact. You may find differently but I would go for what you can afford now, and plan to build as you go.

How about headphones with noise cancellation?
Kill two birds with one stone.
I know my power saw can wail!

Actually I use Peltor noise canceling ear muffs with AM/FM and an whole house FM transmitter. This way I can continue listening to the same music source when running equipment. Yes,the quality isn't now the level of Audeze, but I am really focusing on keeping fingers attached at those moments.

simplest thing might be to get some powered speakers like the audioengine a2 or a5 (200-350) and connect directly to ipod or computer--you can always add a sub/dac

Ebay an amp from the late '70s - early '80s.
I just sold a nice 35WPC Pioneer integrated for $100.