9 Downloadable computer software for facilitating audience engagement, interaction, and data analytics in the fields of television, radio, and online media; Downloadable computer software for embedding inaudible tones in audio and video content to enable real-time interactivity and data capture; Downloadable computer software for measuring, tracking, and analyzing audience engagement metrics and campaign performance in the fields of television, radio, and online media; Downloadable mobile applications for audience engagement, interactive content, and data collection in the fields of television, radio, and online media