This program is exactly what its name suggests: an application which is designed to download and convert clips from YouTube to MP3 file format. You can work with this utility whenever you wish to listen YouTube music directly from your desktop, without using your default browser and the Internet connection.
The app automatically fetches any YouTube URL you copy to clipboard, allows you to select the proper audio bitrate, and choose the preferred destination folder. What's more, you have access to an option to add the final audio files to your iTunes library once the conversion process is complete.
Another aspect I like is the fact that the program allows you to download and convert multiple files at the same time. Plus, it uses a small amount of CPU resources while converting the files.
ImTOO YouTube to MP3 Converter also offers you an option to download the video and save it to your local drives as MP4, FLV, WEBM or 3GP files.
Cutting a long story short, this program proves to be a reliable solution when it comes to downloading and converting YouTube clips to MP3 format. In addition, it's free of charge.