As the title suggests, I propose a small window to change ONLY these three options: volume, output, and preset. This window should function similarly to the default Windows Sound System window, but with additional controls for output and preset. The default action should be volume adjustment, which should receive focus when using the mouse scroll. This window should appear with a single click on the FxSound tray icon and should appear right next to its icon, just like the Windows default sound system. To open the main window, users would double-click or right-click and select from the menu.
I hope you find this feedback helpful.