MP3 Juice

In spite of the fact that YouTube is one of the best resources for finding and viewing videos, there are circumstances when you would like to download content to a computer or mobile device so that you can watch or listen to the content offline.
MP3 Juice is an application designed to help you extract the audio stream from single tracks as well as entire playlists on YouTube to MP3 format.

Enables you to download the content you need

The program comes with a simple, yet appealing interface that displays all the available features and functions available. The app is as simple as it gets and you can download playlists or certain videos from the lists after you paste the YouTube link in the dedicated field.
The application enables you to download indices from the lists (simply type in the numbers in the dedicated field), playlists in reverse order or just extract the audio without any video, an option that can speed up the download for up to 15 times. You can abort the operation at any time by hitting the dedicated button or add another link to download.

It only supports MP3 file format

It is important to note that the application only supports MP3 format and hence if you require other data then you need to use other third-party solutions to convert the tracks. Since the idea is to download content that you can listen offline, it would have been nice if the app offered supports for other file formats as well.
You should keep in mind that the program allows you to download the files at the Best available quality, but you can also specify the file size in the eventuality that you are running low on free space on your local drives. It would have been nice if the app included more options to adjust the quality, especially since Best quality is a rather vague qualificative.

A minimalistic tool for downloading YouTube playlists

All in all, if you are looking for a utility that enables you to extract the audio from various YouTube streams so that you can enjoy it while driving, jogging or doing any activity away from the computer, then perhaps MP3 Juice might be worth a try.