Enabling iTunes track notifications is simplicity itself. Here’s how to do it:
Love this hidden notification on the iTunes 10.5
Here’s how to do it.
1. Open Terminal in Applications > Utilities
2. Cut-and-paste this code into the Terminal window:
defaults write com.apple.dock itunes-notifications -bool TRUE;killall Dock
3. Your dock will close and then reopen.
4. Open iTunes and select a track. Play it, and you should see a track notification pop up in your Dock above the iTunes icon.