What if you get an MP3 from your friend you’d like to listen to, but clicking on it would import shit into iTunes which would not necessarily be the best thing? (Because you want to keep your iTunes library nice and organized like every caring nerd.)
I have developed the habit of right clicking and opening in QuickTime every media file which I don’t want to import into iTunes immediately. What’s even better is QT recognizes the M3U format, so you can easily open a complete album in one set. And there you have it:
A nice little track selector, sweet!