Netgear "Digital Entertainer Express"
I bought this1 Media Player after re-examining Len's slightly earlier model. It's a full-fledged network media player (hi-def video and images as well as audio) and is thus a full-fat replacement for the Roku Soundbridge. It requires no associated server (so no PC has to be active on the network) and can fetch and display its files from my Buffalo NAS as well as from the Interweb malarkey.
A (slight) superfluity...
... of socketry? I'm only using the hdmi, the Ethernet, the co-ax digital audio and (of course) the mains power.
It's already doing a grand job on my MP3 music files and plays the video files I've ripped from my set of NTSC standard definition DVDs (as an experiment) perfectly, too.