I use a programmable numpad by Cherry (not only for changing songs and song states). I needed no additional bindings - just put "s. S, t, T " to some buttons and you can switch songs (e. g. “34” followed by “s” → song 34 or only “s” /“S” for next / previous song. Same with “t” / “T” regarding song states.
It’s shown here:
https://community.cantabilesoftware.com/t/hot-backup-midi-communication/8914/17