Very close to what I need to publish currently-playing track info and album cover artwork. Far superior to Kung Tunes, which required major kludging to ge the artwork up.

Has some flakiness and confusion in its prefs but once set up seems to be pretty stable so far, although during testing I was doing a lot of track hopping and it seemed to not update its artwork file.

The biggest missing feature is an "Idle" message of some sort for when iTunes is not playing.

Brandon Fuller's "Now Playing" plug-in

<http://brandon.fuller.name/archives/hacks/nowplaying/itunes/mac/#download>

looks like the "right" and most elegant way of doing this since it won't require a separate backgroun app, but so far I haven't been able to get it to save files locally for use with my locally-hosted site.