If you right click on the main interface of ACS,
shortcut menu will appear and you
can select whether the main interface of ACS to be hidden in task tray or not.
If you want to show the main interface of ACS, you will have to right click on
the icon of ACS in the Windows task bar.
Even if the main interface is
hidden, automated composing and performing the music will be continued so that
you can listen to the music.