Changed retain to copy in AKTelephone's soundDevices method return to return NSArray * instead of NSMutableArray * casted to NSArray *.
Changed retain to copy in AKTelephone's soundDevices method return to return NSArray * instead of NSMutableArray * casted to NSArray *.

inz/Telephone,einfallstoll/Telephone,mralexgray/SwitchBoard,mobdim/Telephone,thierryc/Telephone,martinkero/Telephone,thinkski/Telephone,nriley/Telephone