FULL PRODUCT VERSION :
jdk1.8.0_71

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
The Volume Mediaplayer doesn't fit if you compare the volume of the main volume control of the system with the volume of the player.
(system Volume is set to 100 when comparing)
examples:
when video file is played by javafx MediaPlayer
setVolume() system Volume experience
1.0 100 100
0.5 100 ~90
0.2 100 ~50
0 100 0

played with normal Windows Mediaplayer:
 system Volume experience
100 100
50 50
10 10
0 0




REPRODUCIBILITY :
This bug can be reproduced always.