I am not sure, which way search link was going to help me to understand your request :)
Reg. this one, at the moment we are not planning to implement this kind of integration, `coz VOX Player has much wider functionality (EQ, HOG mod, ect). So, if you are in love with VOX, why would you need this kind of integration?
request regarding direct loop access as a service inside Sonos
1) Well for one - there is no ipad app. So the iPads that are mounted in the walls are not capable of displaying the full content of the vox app.
2) I furthermore find it quite unpleasent to have a controller running just to access an online library which must run all the time.
3) Also I wasn`t able to find an option to group sonos speakers within VOX.
4) Voice control via Echo/Alexa. Having to physically go to the controller when I want a music adjustement while showering or doing the dishes is oldschool. Sonos and alexa are working quite nice. So accessing all the lowers musicservices ist nice.