This is a free service. It comes with ABSOLUTELY NO WARRANTY.
You are responsible of the usage you make of MP3Toolbox.net. In particular, by using MP3Toolbox.net, you declare that you have the right to use the documents, the way you use them. For example, you may have the right to use a video for personal use. In such case, you may convert it to an MP3 to listen to it with your MP3 player. But you may not be allowed to share it to SoundCloud. You alone can determine what you are allowed to do or not.