Apparently this model didn't come with Samsung's full Smarthub, but from the specs...."LAN connection gives access to BD Live features as well as firmware updates for your player.".
That said, found an Amazon review saying from 2009 saying:
"The latest firmware upgrade, released September 3rd, gives the BD-1600 and all other 2009 models access to Youtube (provided your player is connected to the Internet of course) and the ability to playback .mkv and .mp4 files. Have just completed the upgrade and am still playing around with it. So far I'm quite pleased. Just a little extra to make the BD-1600 even more impressive."
If your router is anywhere close, worth a go ?