A method using TV advertising principles with some interactivity improvements, applied to the internet network domain is used to sponsor a free digital music file download by generating a sufficient amount of money which enables paying all royalties which are constituted by mechanical royalties, production royalties and recording artist royalties, giving the user a complete personal non-commercial license for the use of the digital music files he has just acquired; this process is made possible by using an algorithm to calculate the number of ads required, a process of selection of ads depending on different factors with different weighting but not limited to geographical location, event related, cyclic, targeted audience, special request; controlling the download process by either a slowdown or splitting process, so the complete file is obtained only after the viewing of all ads which is achieved by using a proprietary media player. This method is made possible through the support of a central internet server which includes a song database, advertising database, user database, data concerning standard copyright or specific contract-based copyright, a formula for the calculation of the number of adds required, automatic selection of advertising, and accounting process. This central database has the possibility of linking to external databases from outside partners to obtain songs or advertising, and to link to the computerized unit of the user through the internet network.