Can I suggest that the website be more like Theater View. Show them what you can do. Don't try to tell them.
Let them browse in Theater View and click on Video, or Images and show them how it drills down and makes it easy for them to USE their media. (NOTE: you could track the 'first click' and see what people are interested in when they first arrive) Let them see what MC like in use. Let them feel what it's like to use this software, by making them browse thru Theater View which steps them thru the benefits. (NOT the features, the benefits to them)
Skip talking about setup and tagging. Show the results, that's what matters.
the Audio link should have audio describing benefits. (with text also)
the Images link should show the different views and options and sample photos, maybe with a link to (and explanation about) Pix01
the Videos link should be videos showing it in use; in a real home. Show the speed, the vibrancy, the functionality, the networkability. Show it being used by a 5 year old with an android phone, or iPad. Maybe a few YouTube type videos talking you thru some of the uses of the program.
9 months ago, if I had seen a YouTube video showing me the install of a program on a fresh install in windows, that "just played" blu-ray, with perfect subtitles, with no input from me, I would have bought it, and left J River behind*
I bet others would leave XMBC or MPC behind if they saw MC do that.
the Television link...is maybe not ready for the home page just yet
Show them how fast it is to search a library with 200,000 files.
Show them the 3D wall, or scrolling thru movies
words saying it's great won't give the same impression, IMHO
*we all know that's impossible, but you get my point