To start, make sure that your cable or satellite provider offers a cable box with DVI or HDMI output. Next, you need speakers. Any kind will do, but it needs to accept RCA audio cables (or digital, whatever kind of sound cable your cable box uses). I used a small sony stereo with a remote. If you picked a cable box with an HDMI output you will need an HDMI to DVI Cable
(If your monitor has HDMI input you don't need that, but most do not).