Tube2File lets you download videos from sites like YouTube and convert them into various video and audio formats, including MP3, so you can watch videos and listen to your favorite music on the go. Faster Download Performance. Converts Online Videos to MP3 Audio. Saves Videos as MP4 or FLV Video. Adds Thumbnail Directly Into the MP3 File. Listen To Your Favorite Music On The Go. Watch YouTube Videos While Offline.