Race timing beep, unmodified, from Race Coordinator AI by Dave Aufderheide.
Source: https://github.com/daufderheide/racecoordinator_ai/blob/main/server/src/main/resources/defaults/beep.wav
License: GPL-3.0, provided in RaceCoordinator-LICENSE.txt.
This audio file is distributed as a separate asset; application code does not include Race Coordinator code.