TuNe for Mac displays currently playing song notifications in iTunes, which include the song's title, artist, and album artwork and last for a few seconds before fading out. While the premise is good, the execution isn't perfect: The app's features are broken into three separate apps, which take unnecessary space. Moreover, if you're using a newer version of OS X that supports Notification Center, you will find the app obsolete since iTunes already notifies you of the next song whenever it's minimized or the mini player is active.
Unlike traditional apps, TuNe for Mac features three packages: one to start the app, one to adjust the settings, and one to close it. The app has no dock or menu bar icon. Launch it and iTunes will start if it isn't already running. From then on, you will see text-based notifications in the lower half of your display whenever a new song starts playing. In the preferences, you can set the duration of the notification as well as adjust the color and font of the text.
While functional, TuNe for Mac looks and feels outdated. If you have a system with OS X Lion or newer, you won't need it because of iTunes and Notification Center integration. This utility will be useful to you only if you have an older machine, and even then it will feel slightly awkward because of its three separate packages.
From SYW Mac Software:
TuNe just displays the title, artist name and artwork of the tune that iTunes currently plays for a while, after that it disappears perfectly so it doesn't bother you much. The package includes the source code so that you can modify it by yourself.