I had already started hacking on my iTunes -> RSS parser when I realized I had not taken the time to fully look around and see if this has been done before. I had done a little googling but had not dug through the ugly but sacred SourceForge repository. So I entered Yee Olde Forge to seek similar projects. Here is what I found:
So do I continue? Yes... The three projects are not quite what I want, and all of them appear to have gone stale in terms of activity.
BlogTunes is Java, but it does trackbacks to your blog. So real close to what I want, but not quite there. I want RSS. BlogTunes is also more than I want - its a GUI app that sits there and runs while you are listening, uploading the list live. I don't want real-time.
iScrobbler is tied to a proprietary service, Last.fm (an interesting concept BTW!). Written in Objective-C/Cocoa and Apple Script (and thus restricted to the Mac), the project appears to have little activity in years.
Kung-Tunes is a very neat idea, but has officially been "retired" by the author and is not Java. It also will only run on OS X. You could probably use it to generate RSS - the screenshots appear to allow fairly flexible templating of the output. But it actually does more than I want. I want a simple building block - think Unix command line simplicity. Pipe in the iTunes XML, out pops the RSS. Configuration would be limited to what is in the RSS.
So that being said... I plan to continue hacking on this idea.