Interactive digital media platform, methods and apparatus for detecting and dynamically synchronizing to media content (e.g., television (TV) programs or movies) that a viewer is watching while providing related content on a second screen for enhancing the viewer experience. In one embodiment, the primary content is determined by detecting an audio signal of the primary content via the second screen device; the audio signal may then be processed to generate a fingerprint for comparison with a data store of primary content. The primary content can be classified by various categories (e.g., unique program, advertising, repeat airing, theme song . . . ) and the classification used to aid in the identification and/or in selection of the content to be presented on the interactive second screen device. The system allows a substantially real time comparison and recognition of what primary content a viewer is watching on a first screen device and presentation to the user of content that is substantially synchronous to the viewer's location in the primary content. The viewer can actively engaged with the content presented and can share the content with others via social networking and the like.