The usage of podcasting for all kind of media files in the Internet has become very popular. A part of its strength lies in its simplicity. However, the success of such a technology proves not only the demand for structured data but also produces new problems of networking costs for broadcasters. Media devices of the future will be able to access content either from digital broadcast networks or through the Internet infrastructure. In order to manage and present this multifaceted material to the user, common metadata and procedures are needed. This contribution will give a survey of the standards and methods provided for digital broadcasting and cellular systems as DAB/DMB, HD RadioTM, DVB, UMTS and explore their ability to interface with on-demand content provided in the Internet. Two implementations for digital radio and TV will show how such a linkage of linear content with on-demand content can be presented to the user.