Audiophiles wanting to wirelessly liberate their music from desktop speakers have a tough choice -- buy a $99 Airport Express, which uses a less-than-ideal 3.5mm line-out jack, or spend big on a Sonos. Bicom's playGo USB is the new cord cutting kid on the block, and it's aiming for the middle slice of that market. For $450 you get a transmission unit which connects via microUSB to your computer and a receiver that connects to your HiFi with RCA or Optical cables. Song streaming couldn't be easier, the two have a r
