AB, maybe you didn't follow my comment -- it could have been said better.
AB>>> My DOT 2nd generation plays just fine w/o using BT.
No one said a Dot needed BT to play music on the Dot. To stream to and from Dot (from another AB>>> I also have a router which I am assuming the DOT is using when my computer is shut down-off.device) needs BT.
Everything related to Dots, etc use the router. That's how a command through the browser gets to the Dot -- thru the router. Your browser is not communicating directly with the Dot, no more tha a phone or tablet is. All communications passes through the router. That's why it is called a router, because it "routes" communications from one point to another.