Thank you for your response.
Ultimately I want to create something for my keys stuff and singer / guitar /backing tracks. Starting with the later so looking to
Create a vox chain - where I can change things for songs / different parts eg : live tune key, fx etc
Guitar basic patches to use for songs
And play to backing tracks ( possibly using the tracks to cue the racks/variations)
The file I download was one I found - I think it may have been yours that had a global streaming player and then a rack example to choose tracks / control other parameters - here [Gig] Streaming Audio File Player Controls
Thanks for your help