Volume control correctly displays the adjusting percentage for "Pulse Master 0". However, I do not use "Pulse Master 0".
When I press v to change to "Pulse Master 1", the - and + keys do change the volume, but do not change the displayed volume percent.
I'm using cplay from github current, and Python 2.7.9
From #14 (comment)
if the output of pactl changes it would break again