Vimeo Choppy playing full screen sometime small window

[shengchieh]

For linux program, yes - general knowledge.  I haven't use window for over an decade, so can't answer that part.  You try it.  Click "x" and look at the processes.
In linux, you click "x' and you still see the program running on your panel.  You also can open up a terminal and type "ps -ef" and see the program still running.
This is true w/ some non-audio programs also.  Keep an eye on your panel after you click 'x'.

Sheng-Chieh