How do I install it on pi4?

[razserv2010]

How do I install it on pi4?
I am a new user of linux and would love for someone to write a guide ..
Thanks.

[Marshalldog]

I'm probably wrong but:
go to the terminal on the raspberry pi (install raspbian)

npm install https://github.com/vbaicu/mMusicCast

then

npm start mMusicCast

probably wrong