OK, So i figured out that if I go into Nemo and do the following:
"Go to Edit > Preferences > Behavior and in Media Handling uncheck "Automatically mount removeable media when inserted and on startup"
Strawberry will see the music collection on the player.
However, when I try to build a playlist and save it to the device I get the error:
"Unable to Access M400/ Unable to open MTP device "001,021"
Any suggestions?
Thanks