If i could ask for 1 request
- Is it possible to map the song selection to a controller, I guessing we can only change the midi file from the webgui

MIDI File - MOD Devices
If i could ask for 1 request

This is a very good idea. The same applies to the “Audio File” player. This would be an enormous enrichment when making music.
This is pending for when we have the possibility to address individual items on a list (that is, user-selectable).
For now, you can save presets and map those instead.