If you want to watch a YouTube video or listen to music but you don’t have a Wi-Fi connection, you’re going to struggle. However, by converting music and videos to MP3, you can access all of your favorite content offline. You don’t have to deal with the ads interrupting in between your videos, but instead, you can access content on the go. Disclaimer: Without the video creator’s permission, downloading and converting videos goes against YouTube’s terms and conditions. Be sure to check the copyright rules before downloading any content.