Moviemaker Video window Controls

I've just installed Moviemaker 2016.  I loaded a video to play around, and I see that in the playback window there are only 3 buttons, to play the clip, and to skip  to the previous or next frame.  There is no pause button, nor any volume control button.  Are these buttons really missing or am I doing something stupid?  I don't want to change the volume of the clip itself, only make it higher or lower whilst I'm editing

Thanks in advance for your help