All the hubbub surrounding the new iTunes store has eclipsed the fact that it’s now possible to share music collections via Rendezvous. I’m sitting at work listening to music stored on my Mac at home. All 16,000 tracks are available, with all the usual search functionality. All my playlists (both standard and “smart”) are available. I’m in hog heaven. If you set sharing on in iTunes 4 prefs, you can also provide a direct link into any point in your collection — Cmd-Click and select Copy URL. It’s also possible to link to specific items in the iTunes store. Check these examples.