If you are tone deaf or hearing impaired about the only thing you can do is look up the solution or get a musically-inclined person to solve it for you. You can also write to the game designers and ask them not to exclude you in future. When inside a maze the best advice here is to map your way through on paper. Graph paper is excellent for this. Do not forget to mark down anything unusual in the maze, as it is usually put there for a reason.
Landmarks come to mind.
Upon entering a chamber inside a maze, examine it carefully. Permanently placed objects within the room may indicate the next direction to take. Some adventure games have combat sequences. In many instances they are better fought using the keyboard rather than the mouse. If you fail miserably at fighting try getting an aggressive friend to fight the scene for you, or some games may allow you to override the sequence altogether.