nTunes (nodeTunes?) is an HTTP-based API for interacting with your iTunes installation (currently only for Mac OSX), written with NodeJS.
In other words, it's the foundation for writing web applications based on your iTunes library. You could potentially write a website that remotely controls the volume of the iTunes on your computer.
If you're lazy, just use the awesome npm of course!
npm install nTunes
nTunes itself is a Connect HTTP Server subclass, which can either be run stand-alone or created by your own NodeJS code, with the capability to add layers (to serve your implementing website perhaps?).
If you're only interested in nTunes as-is, then it comes with a convenient executable file to easily start the HTTP server for you to play with. Once you've installed via npm, simply invoke:
nTunes
This starts nTunes as a stand-alone HTTP server in development mode. While the server is running you can interact with your iTunes library through simple HTTP requests sent to your computer. Here are some examples:
To get the name of the current track with a GET request:
curl localhost:8888/current%20track/name
// Returns "Lateralus"
To set your iTunes' volume to 50% with through a POST request:
curl -d value=50 localhost:8888/sound%20volume
// Returns 50
The API mostly returns JSON encoded values, and is mostly intended to be used
with the XMLHttpRequest object and JSON.parse function in the web browser.
For familiarity, creating your own nTunes instance works exactly the
same as creating a connect server, except that nTunes' layers get
added after your passed layers, so be very careful not to overwrite part of
the nTunes API! Here's an example of serving an index.html file when
it's requested, otherwise falling-through to the nTunes layers:
var nTunes = require("nTunes");
nTunes.createServer(function(req, res, next) {
if (req.url == "/index.html") {
// Serve your index file...
} else {
// Fall-though to the nTunes API
next();
}
}).listen(80);