Sling Media announced this morning that they’ve started shipping their much-anticipated Slingbox PRO-HD uber placeshifter, which turns out to be the first with the ability to to deliver content in high definition (up to 1080i) over a network, or locally. The PRO-HD can accept signals from cable boxes, DVRs, and anything else that can plug into its coaxial, component, S-video, RCA, and composite inputs. It can take advantage of up to four difference sources, and can then transmit it to just about anything. The best part here, though, is that the Slingbox PRO-HD can transmit HD video, so if you are running the SlingPlayer 2.0 software (only available on Windows at the moment - boo!) you can view live and recorded video, right up 1080i HDTV. You can pick one up for $300. If HD isn’t y our thing, you can pick up the Slingbox PRO for $230.