I added a Spotify song URL to the Reference section for one of my SM songs. I am struggling to get the link to playback using the iPhone app (the inline player just hangs when opening). It partially works when I load the Beta version with Safari, but only when I choose the option to open in Spotify (the inline option doesn’t work and gives a funny message about playback not being allowed in my country. I have a Spotify account and the app on my iPhone, so no issues there.
This will be a really slick feature if I can get it figured out!