Nice interpretation of the theme! Definitely felt like I was grappling with scale and dimensions. Also quite liked the sense of humour in the dialogue and the scoring, but bit of a shame it didn't end with a punchline.
Issue with the audio seems to come from using 3D sources with a sharp drop off, next time you could try using a non-3D source and pan the audio so that it's not too quiet/loud but you can still tell where everything is.