You can use your own products to train AI. ( such as groove agent, halion, the grand )
I tried to use it to separate the tracks of songs made with these products, but the effect was very bad.
So you want to know if Spectralayers AI can be trained? Not so far as I know.
Let me know if you need any additional further assistance with separating stems. I would be glad to help with assisting others in separating stem tracks. Check my results
Here