Volumio with LMS and Plugin


I would like to use volumio with squezelite. The problem is : if i start a music with my LMS, is not possible to stop the music with volumio (if i try to use “play” on volumio, the music start in addition to LMS music).

I would like to use jeedom to play my music automatically when i arrive in my room but if it’s not possible to stop or to switch music (i have a screen in my room) it’s not interresting,

I have an another problem, it’s not possible to install some plugin. I have always an error when it try to install
For the moment I have : Spotify plugin, screen plugin, you tube, squeezelite, spotify connect 2.

Can I have some help ?

Thanks a lot