How to install via ppa / linux terminal

[deenbee]

I need a ppa from launchpad , how to install??

I need a build deb , for armhf

but need a ppa code to install via terminal

[Saga Musix]

We do not provide any PPAs. As Armbian is based on Debian, you should be able to just use their official packages for libopenmpt and related packages (see e.g. https://packages.debian.org/source/sid/libopenmpt). If the version included in your Armbian/Debian version is too old, you will have to compile it yourself.