You can install the program on your new PC. Download the latest version here: https://www.deskshare.com/download.aspx If you see a purchase screen, enter your original serial number to activate the program. If you need your serial number, please use our automated service to retrieve your registration information. You can view the instructions here: https://www.deskshare.com/lost_key.aspx You can check whether the program is registered by selecting About from the Help menu.

As you wrote, there are external programs that do this. We will consider adding audio feedback features to a future version of My Screen Recorder Pro. You can use visual cues to indicate a mouse click, as described here: https://www.deskshare.com/help/msrpro/CaptureMouseCursor.aspx