Is file sharing ever legal?
If you hold the copyright for a particular file, it is your right to share that file how you see fit. For example, if you write and/or produce an original song and choose to make it available to anyone for free over the Internet, it is perfectly legal for you to do so. However, when you distribute copyrighted works of others who have not given you permission to reproduce, download, and distribute their works that’s copyright infringement.