I bought a Steren HDMI Cable.
(Supports up to 1080p)
And hooked up my new laptop to the Samsung TV without a hitch.
I also bought an Audio Cable Adapter.
(3.5MM to 2 Plugs Y-Adapter)
To hook up my MP3 player to my stereo.
And that worked too.
I'd like to buy a Digital Media Player eventually too.