Non-exclusive licenses can provide you a lucrative source of income. If you are an artist, you can use a non-exclusive license to grant print makers a license to manufacture reproductions, either numbered or mass-produced, of your original work. If you are a musician, you may grant one non-exclusive license allowing the use of piece of music for a commercial, and a second non-exclusive license allowing another musician to sample a section of the same piece of music. If you are a software manufacturer, you can grant multiple licenses to commercial or academic users to use a particular software program.