To update Q-Play on a Windows player, follow these steps.
Open up the Player menu in the left menu, and press on your Windows Player.
In the pop-up window, click on Advanced and then on Update Software.
The update may take several minutes, so please be patient. IF the Q-Play version is very old compared to the newest version, the update might fail or not initialize at all — this usually means that you have to reinstall Q-Play from scratch.
In version 1 of Q-Play you do the following:
Go to Players.
Find the Windows Player you wish to update, and click on it.
In the pop-up, click on Update Software, and click Yes to the update.