Okay. So. Upon updating Magix Music Maker, "Play Clicked Notes" is checked and when I click on a note, it doesn't play. Someone. PLEASE. Explain. I can barely even make music until this MAJOR error is corrected. This is why I don't update programs when they work fine beforehand.
Assuming you are doing this in the MIDI Editor, check in the program settings that your audio device is set to use an ASIO Magix Low Latency or install ASIO4All and set it to this.