Self-publishing is the publication of any book or other media by the author of the work, without the involvement of an established third-party publisher. The author is responsible and in control of entire process including design (cover/interior), formats, price, distribution, marketing & PR. The authors can do it all themselves or outsource all or part of the process to companies that offer these services.

Read more about Self-publishing:  Business Aspects, Marketing & Promotion, Advantages of Self-publishing, Disadvantages of Self-publishing, Self-published Best-sellers, Self-publishing in Music and In Other Media

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Mascot Books - Self-publishing
... Mascot Books Author Program, focusing on self-publishing the works of authors all across the country ...
Self-publishing in Music and In Other Media
... In the years since the Internet became prominent as a medium for publicizing and distributing music, many musical acts have sold their recordings directly over the Internet without a label, either through their own websites or from third party websites ... In some cases the sale takes the form of a physical CD or LP that is shipped to customers, while more sales today are beginning to take the form of downloads ...