This patch adds a button that allows you to play at
This is useful when you can hear a click that is
difficult to locate visually.
To apply this patch, unpack a copy of gwc-0.20-07. Then
from inside your new gwc-0.20-07 directory use a
patch -p1 < gwc-0.20-07_half_speed_play.diff
where "gwc-0.20-07_half_speed_play.diff" is the file
name of this patch.