I've considered adding music, but I could find little that felt appropriate within the rather short turnaround time for Treatment. I had considered adding strictly diegetic music at one point - maybe I'll return to that idea in the future?
As for the showers being inaccessible by normal means: I do not know how I missed that. Sorted! Thank you very much for informing me.
Sound effects should now be purged properly after treatments. If you encounter issues in the most recent version (1.01), please do let me know where specifically.