Electronic book with extra free content

A method comprising:

• receiving, by an electronic device, first content and metadata, the first content comprising pages, the pages comprising a first page displaying an object linked to a second content, the metadata indicative of one of external content output devices configured to output the second content and connected to the electronic device;
• displaying, by the electronic device, the pages of the first content;
• receiving, by the electronic device, the second content when the object displayed in the first page is selected by a user;
• and
• supplying, by the electronic device, the second content to the one of the external content output devices based on the metadata.

A non-transitory computer readable medium having a plurality of executable instructions stored thereon configured to cause one or more computers to perform processing, the processing comprising:

• receiving, by the one or more computers, first content and metadata, the first content comprising pages, the pages comprising a first page displaying an object linked to a second content, the metadata indicative of one of external content output devices configured to output the second content and connected to the one or more computers;
• displaying, by the one or more computers, the pages of the first content;
• receiving, by the one or more computers, the second content when the object displayed in the first page is selected by a user;
• and
• supplying, by the one or more computers, the second content to the one of the external content output devices based on the metadata.