One thing that I find very annoying about Simutrans on Windows is that, whenever a quiet sound is played, it reduces my system volume, which remains reduced even after the sound has finished playing. I don't know whether Simutrans uses Windows 7's new way of doing this (I use Windows XP, so wouldn't be able to take advantage of this in any event), but, at minimum, would it be possible to re-set the system volume to its former level after a sound has played?