Looks good, but controlling it with the arrow keys is currently unpredictable
that, plus the irregular layout is somewhat confusing to me.
How about using your spider web for submenues?
What I mean is a circle of the core features, like your inner spider web ring with tv, music, pictures
after choosing one of the core features a submenu with another web around this core feature pops up like music surrounded by mp3, last.fm, radio etc.
these would only pop up when you navigate to the music item.
(You can imagine this also like a firework).
tomtom