You're an audiophile. Apparently, you don't care about DLNA or HTPC. Some of our customers do. I do.
I think the Sonos site is a very good illustration of the essential quality that's largely absent from JRiver's existing and proposed web pages. They appeal directly to what really matters to virtually all potential customs, and encourage them to export further.
Claiming to be for audiophiles at the point if introduction, for example, is a huge mistake. What's an "audiophile"? If I don't think I'm one, I'm gone. If I do think I'm one, I'm instantly sceptical and demanding proof. I'm likely to settle on some "proof" that doesn't involve a full, fair trial of the program. Maybe the fact my audiophile friends haven't recommended it to me is proof enough.
Now look at how Sonos does it: "If you love music, you'll love Sonos." Well, who doesn't love music?! The entire target audience is effectively being told this is something for them, and being invited to look further.
I suppose a site like that requires a professional designer. As well as strong marketing and design skills, it probably takes some distance from the product. It's difficult for those deep in the trees to sell the forest. (How's that for a mangled metaphor?)