i use litestep on my htpc right now. i use it for both audio (foobar2000) and video (media player classic). to control the computer, i mainly use my receiver's remote control (in conjuction with IR software) and a bluetooth mouse. the remote comes in handy when i'm just listening to music as it controls foobar's playback commands (play/pause/stop/back/forward/etc) and the mouse is useful for enqueuing music folders and controlling MPC. (see a picture here:
http://students.seattleu.edu/connolb/images/htpc_controls.jpg
the theme:
http://students.seattleu.edu/connolb/images/htpc_ss.png
this is a screenshot of the tv when running litestep. the top is an xlabel readout of foobar's titlebar and it smoothly scrolls the song title. below that is foobar with a custom config from
http://pelit.koillismaa.fi/fb2k/strings.php?f=40 (colors edited by me). the layercut shortcuts below foobar are links to folders of music on the pc. when i click each folder, it automatically clears the playlist and enqueues the contents in foobar.
the tray autohides because it's kind of useless most of the time (especially since the icons get all crappy looking anyway) and the rest of the system is configured with large fonts and titlebars so i can see/read what is on the screen... a tv isn't very good for computer tasks sadly.
other pictures:
http://students.seattleu.edu/connolb/images/htpc_rack.jpg
http://students.seattleu.edu/connolb/images/htpc_setup.jpg