Y-RAQ-DEL2 software for WIN10

I have a new to me Y-RAQ-DEL2 wireless bluetooth keyboard.  I had an old bluetooth adapter laying around so i tried it out.  The keyboard was found by my WIN 10 system and i paired it.  It works great, typing on it now.  The only problem is that I do not have whatever software was included with the keyboard and am unable to edit the buttons along the top.  For example.  When i hit the music note button it brings up "groove music" player.  I would rather it brought up itunes.

Other than that, i am loving this old (new to me) keyboard.