I recently purchased a 22" Gateway display. I am considering buying the speaker-bar accessory, but I was wondering if it will work with my computer. I have a Black, 2.4GHz MacBook but I'm not exactly sure how or if the speakers will work on my MacBook. Also, I have a second question. The monitor (link: http://www.gateway.com/programs/widescreen/22_overview.php?cmpid=topnav_displays) has HDMI and the site says it can play television, but I'm not sure how that works. How exactly would I change the channel or set the TV up on the monitor?