Thank you @MattilynMattroe for your reply.
The object is
jt/midi/play and yes, it allows me to select the output device, including the following:
...there is no 'internal device' but it has 'internal port' 1 and 2 as you can see, will those cycle back ?
Additional question in case you may know, I can load a midi file from the computer, and I can save the patch, then open it again and the midi file is already loaded into the object. But I assume this will not remain as such once the patch is loaded into axoloti. Then, how to load the midi file by default into the object in axoloti standalone?
Thank you very much