If you’re an avid electronics DIYer, then this DIY Wi-Fi radio ought to be your cup to tea since it was built from scratch, based on a hacked router.
“I removed the USB and DC power jacks from the WL-520gU PCB. I’m planning to use the USB port solely to talk to my SYBA USB-Audio adapter, so I removed the USB connector from the SYBA as well and wired the USB lines directly to the router. Some people may disagree with this, but wiring directly to the router simplified the wiring inside the radio and saved space by eliminating unnecessary USB connectors.”
Something to keep you occupied this summer if you’re interested, eh?