Downloadable software for delivery of electronic media files over the Internet; dissemination of advertising for the goods and services of others via the Internet; providing temporary use of online non downloadable software for delivery of electronic media files over the Internet; application service provider featuring software that distributes advertising, user-generated content, and user-requested content, and which enables a user to utilize any kind of media file, for collaborating and interacting with others, and for sharing electronic files across different operating system platforms