Snowbird wanting home Television while away.

MrWizard wrote:
you can only watch 'ONE' ITEM/channel at a time
the sling box or volkno will only select and send ONE channel or video stream
you would need 'multiplexing' to send two channels, then separate them at the receiving end

i do not know any 'remote' webcast device for consumers that will do this
even if possible it would mean 'degrading' signal by 50% to place two signals / aka share the bandwidth

YES
you could connect TWO sling boxes to TWO different cable boxes/PC's and stream both from the home network
each one would have its own IP address
and each one would have to share the bandwidth aka data rate, with the other box
but the receiving side in Fl, might not have enough bandwidth to get good streaming for two devices