To me an "absolute move" sees very appropriate for a range of applications that thrive to remote-control the playback either directly from some hardware, or by messages resulting from some kind of pre-processing. (A "stop" also seems like desirable.)
Right now, for me this was just a theoretical question, as I don't intend to add any playback feature to my live setup. But triggered by a discussion in another thread, I do thinks that if I would consider to use such a functionality, I supposedly would like to us a kind of MIDI controller to selectively start a song or sound snippet.
(See ->
https://forum.cockos.com/showthread.php?t=213568#3 )
Thanks for listening,
Michael