i connect a soundbridge homemusic to my imac and with a airport express connected too. A can play music files from my imac but no radio. I can´t update the software from soundbridge. Message: FAILED TO CONTACT SERVER – HTTP FAILUR 3 – CAN´T DETER_MINE SERVER ADDRESS.
This is more a roku setup issue… I think probably the place for this is on the roku forums: http://forums.rokulabs.com.
that said, it sure sounds like your soundbridge either isn’t getting a DHCP address, or it’s configured with a static address with wrong settings — missing DNS or gateway, likely.