How do you download YouTube songs in mp3?

There are a few ways to conduct downloading YouTube videos to mp3.

The best method I know of is to go to a called, typically, YouTube-to-mp3. Just use you search engine to find it and it will be the very first link (at least thats for google, not sure about other search engines). When you get to the page there will be a space where you paste a video link into there and it will transfer it into an mp3 file to download, (it doesn't usually take over 5 seconds). Just find the song you want to download on YouTube and when you are on the page that lets you view the song, copy the URL from THAT PAGE into the YouTube-to-mp3 converter page.

Tips:

Make sure you get the url of a good quality video with a good quality audio.

Also, note that this method is generally best used for downloading a few songs at a time. If you want to download albums i suggest using utorrent to download them as you can pretty much download full albums at once.

Hope this helps :)