Backing track licensing: When you create a session you agree to a music licensing agreement. I think it's ok to share charts that I may have obtained from Ultimate Guitar Tabs etc, but mp3s that were gathered from many different sources, adjusted for key etc could be a violation if somebody may ask you to provide proof of purchase.
JamTracks purchased in the app should be fine, I'm talking about the music collections many of us have.
Using Line 6 Helix or Roland Session Mixer as audio interface
I have no plans to broadcast sessions I start. I might record one for educational purposes. Some people I follow on YouTube who broadcast regular music-related videos have run into licensing issues ---- for example if they use a backing track to demonstrate a guitar solo. They get a "strike" which forces them to take down the video, and could lose their ability to post anything on youtube if not corrected.
I doubt we're in that same world with JK sessions.
Using Line 6 Helix or Roland Session Mixer as audio interface
Agreed - based on my proficiency level and the quality I currently get .... having to consider copyright & living might be a ‘nice problem to have’ :-). ..... but still worth being aware of. Thanks Hans-Peter for the details on the terms - useful to know it’s ‘Non Commercial’ .... so we would need to be careful to not upload a ‘how to video’ to youtube or similar.
I think that those who do broadcast actually play the whole thing live anyway - no backing tracks and therefore it is all their material.
I know that if you improvise a known tune from the chords - that again is ‘your work’ .... but dont note copy a transcription of someone else