Hi,
To start a playlist, you do a POST request to this URL:
http://ELM-COMPUTER:PORT/elm/stages/Stage01/scheduler/playlists/playlist01?running=1
where:
ELM-COMPUTER is the name of the computer running ELM and it can be replaced by the computer's IP address
PORT is the port number as specified in the HTTP remote config in ELM (default is 80)
Stage01 is the name of the stage
playlist01 is the name of the playlist you want to start
running=1 is to start the playlist