Audio made in an audio editing program is arranged along a timeline. The 0:00 to 10:36 of the track.
Is the material arranged along a fixed timeline?
Does the timeline correspond to a spaceline, so that the walker must proceed at a pace roughly analogous to the audio?
Is the timeline amenable to pause or playpack (through tracks, through sliders)?
Or is the audio organized in a different way? Geolocated triggers might alter or randomize the order in which audio bits play, depending on the available pathways through the site. Playlists might be shuffled in order to randomize them, keeping the correlation of audio to location unfixed.