The Music Maker theme is no longer being sold through Gumroad, so unfortunately the affiliate program is being shut down.
Here are the 2.20 and 2.21 theme update notes.
A new theme update is being released soon. Here are some of the changes going on.
Check out this interview with music producer Curtiss King on his success on selling beats.
New tutorial added: Create a Contact Page & Multiple Forms
Here is a video explaining how to find specific CSS classes and IDs to change code. Visit this post for basic css properties.
Here are a list of all the changes for the music maker theme before the last update.
Here is a discount WordPress plugin created by one of the Music Maker theme users.