Another new feature in iTunes 4 is the ability share individual track URLs.

• With sharing enabled in the preferences panel, control-click on a track in your library to bring up its contextual menu.

• Select ‘Copy Sharing URL’ and paste it into an HTML document or an email.

This is particularly useful if you produce your own music; you can publish track URLs and serve them up from your own iTunes library. *[URLs]: Uniform Resource Locator