To change the theme of LMMS you must go to this link and download the theme you want to install, when you download the theme you will have a folder, which you must paste in the folder where LMMS has by default the installed themes, when you have pasted that folder you open LMMS , click on edit and then configuration, click on directories and where it says theme directory you choose the folder you just pasted, click on agreement, restart the program and you will have the theme installed.
Watch the following video where I also explain how to do it.
Watch the following video where I also explain how to do it.
