Yes, the tablet is a Windows 10 machine which runs my own (free) little app called “LivePrompter” (specialized to display and scroll lyrics and chords in time with the song). Both the LivePrompter tablet and the Cantabile laptop are connected to a wifi network (I always have one on stage, since my mixer is remote-controlled via iPads). LivePrompter sends MIDI program changes to Cantabile via rtpMidi and controls song loading in Cantabile. Works extremely well.
If you want to learn more about this, take a look at this thread: Cantabile and LivePrompter - now better together!
Cheers,
Torsten