[Zubersoft]

I just added command line argument support for the next update. You will be able to launch the Microsoft Store version of MobileSheets and pass arguments like this:

start "" shell:AppsFolder\41730Zubersoft.MobileSheets_ys1c8ct2g6ypr!App -song "SongTitleToload" -page 0

I will also support loading setlists:

start "" shell:AppsFolder\41730Zubersoft.MobileSheets_ys1c8ct2g6ypr!App -setlist "SetlistTitleToLoad" -songIndex 0 -page 0

The songIndex and page arguments are optional in both. So as long as you can have your excel document launch those command line arguments, then it will work. That may involve having to use a macro though. I should add that you can have the app running when you activate those arguments and it will just load the song or setlist as needed (meaning the app doesn't have to be closed and launched to handle it).

For the FastSpring version, just use Zubersoft.MobileSheets_9fx6hze9e3cne instead, so 

start "" shell:AppsFolder\Zubersoft.MobileSheets_9fx6hze9e3cne!App -song "SongTitleToload" -page 0

Mike