Schedule "Line Input" w/external player now playing

Hello, When scheduling a "Line Input" to start, it would be nice if RB had an option that could allow the metadata from a nowplaying.txt file from a separate DJ mixing software on the same PC. I want to be able to route the audio from the DJ mixing software into my mixer, send the mixer audio into the RB "Line Input", at the same time have RB read and update the DJ software nowplaying.txt file metadata.