System for present content. The system includes means for receiving a set of timepoints relating to a content data and means for generating display signals based on the content data. The system also includes means for sending display signals to a display device that represent the content data and means for notifying a server over the Internet, that a timepoint among the set of timepoints has been reached in the content data. The system also includes means for receiving, from the server, via the Internet, an identification of one or more particular additional content and in response to receiving the identification of the one or more particular additional content from the server, means for interrupting presentation of the content data; and presenting the one or more particular additional content. The system further includes means for resuming, presentation of the content data after presenting the one or more particular additional content.