ACT-MP3

ACT-MP3 is a tool that lets you easily download album art for all of the CDs you have on your hard drive in a matter of seconds.

To do this, you just have to select the folder containing your audio files (in MP3 format) and start the automated search. The search time depends on each CD, although the album art will usually be downloaded straight to your music directory after a few seconds.

The downloaded images may be in different formats (JPG, PNG, or GIF) and have different sizes, although they're usually smaller than you hope and have pretty low resolution.

ACT-MP3 is a very interesting application for users who have an enormous collection of MP3s on their computer that don't have the correct album art. If that's your case, you'll definitely want to check out this application, which could save you a lot of time.