SB duet & radio - 2nd time install after house move/'my music' accessibility problems

hi all

hopefully someone can help - i have had a SB duet and radio running side by side in the same house for 3+years - having recently moved house i have set up both players on new home WIFI after doing factory reset - however only the radio will connect to 'my music' library on my pc where as the duet (which previously also had full access) now only lets me play from internet radio/3rd party apps

this is probably something stupidly simple but i am drawing a blank!

thanks in advance for any suggestions

Murray