Aux in port but no button

[Jocktherock]

Hi all new to forum got. Problem with my 2009 Ford Fiesta 1.6 tdci mrk 6 sport. Have aux port but no aux button on radio display. Car audio manual tells me to press button but there is not a button wondering if there is a way of selecting aux through radio display. Phone bluetooth works fine for phone calls ect but don't think I can assess music throught it. Any help would be great thanks. 

Thanks jock