LaunchBar 4 is just out in beta, and I've already found some really cool ways to leverage it. Here's one. While LaunchBar 4 can scan your iTunes Music Library, giving you access to your tunes and your playlists (as well as letting you browse by artist, album, etc.), it doesn't offer any way to control iTunes from the keyboard. AppleScript to the rescue. Just make a script file out of this:
tell application "iTunes" playpause end tellAnd store it in your Scripts folder. I've saved it as itunesplaypause.scpt, and I've gotten LaunchBar to recognize it by typing ITP (type this, then scroll until you find the script, and press Return). Now, by typing ITP and pressing Return, I can play or pause iTunes.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040331152445739