A system for synchronizing audio and video of selectably presentable multimedia content includes a memory for storing a plurality of selectably presentable multimedia content segments. Each content segment defines a portion of one or more content paths and includes a decision period during which a user may select a subsequent content segment as the content segment is playing. An assembly engine seamlessly assembles a subset of the content segments into one of the content paths, ultimately forming a multimedia presentation. A configuration manager determines an audio file and a video file to be played based on a content segment that is selected to be played immediately following the currently playing content segment. An audio engine processes the audio file for playback, and a video engine synchronizes playback of the video file with the playback of the audio file.