JOB: Asterisk help with So Percussion

Basically, I’m looking to create an audio installation where people can sort of ‘play’ a phone system – they’ll be listening to music on the main menu, but then by punching buttons they can head in different directions.  So maybe something like within each particular section they can hit 1 through 9 to move somewhere else, where the music would change or maybe there would be spoken text (like Dial-a Poem) or something else.  Sort of like a Choose Your Own Adventure piece…. I’m imagining a lot of different directions people can go – get lost, forget how they got somewhere, not remember how to get back to a particular spot they liked when they do it again.