You should be able to install it by just double clicking the DMG and drag the Strawberry folder over to "system". It's the same way similar dmg's are installed on macOS.
However we only provide experimental development builds for macOS since we don't have any developers with mac active in the project. You can download here: https://builds.strawberrymusicplayer.org/macos/
Hi.
macOS needs to some special tricks to receive media keys without iTunes receiving them (or maybe another application), we used SPMediaKeyTap for this but it was removed by a contributor. Unfortunately I don't have a mac so I can't look into or fix it.
A developer with macOS needs to fix this, I don't know of anyone.
It depends on what Linux distribution you run on it.
You might need to compile yourself from source unless strawberry is available for arm in their repository.
But it's pretty easy as long as you know what dependencies are required so you have the required development packages installed before you start.
Instructions are here:
openSUSE: https://github.com/strawberrymusicplayer/strawberry/wiki/Compiling-on-openSUSE
Fedora: https://github.com/strawberrymusicplayer/strawberry/wiki/Compiling-on-Fedora
Debian: https://github.com/strawberrymusicplayer/strawberry/wiki/Compiling-on-Debian
Ubuntu: https://github.com/strawberrymusicplayer/strawberry/wiki/Compiling-on-Ubuntu
Arch: https://github.com/strawberrymusicplayer/strawberry/wiki/Compiling-on-Arch
Most of the other Debian based distros should work with either the debian or ubuntu guide.
Then it looks like it stops on a directory level before it parses any files. It will skip any directory that is hidden, or has files named ".nomedia" or ".nomusic". Other than that, it's hard to tell what could be wrong. It's working for everyone else, so it must be something to do with your directory. Try a different directory.
This should be fixed in the newst builds: https://builds.strawberrymusicplayer.org/ and the next release.