Android Question [RESOLVED] Android 9 - NB6 - custom sounds

Sub Process_Globals
   'These global variables will be declared once when the application starts.
   'These variables can be accessed from all modules.
   Private rm                As RingtoneManager
  
End Sub

Sub ToolBar_MenuItemClick (Item As ACMenuItem)
 
   If Item.Id = 2 Then
       ' // Get a notification
       rm.ShowRingtonePicker("rm", rm.TYPE_NOTIFICATION, True, mod_core_consts.APPSET.notification_content )
   End If

End Sub

Sub rm_PickerResult (Success As Boolean, Uri As String)
  
   If Success Then
       ' // store URI
       mod_core_consts.APPSET.notification_content = Uri
       mod_settings.put_notification_content
   Else
       ToastMessageShow("Error loading ringtone.", True)
   End If
  
End Sub

Sub BigText_Notification(m As helloMessage)
  
   Dim n As NB6
   Dim cs As CSBuilder
   Dim nm As Notification
  
   If lastNotification = 0 Then
       lastNotification = DateTime.now
   End If
  
   n.Initialize("atlas_hello_message", Application.LabelName, "DEFAULT").SmallIcon(notifyIcon).BadgeIconType("SMALL")
  
   ' // setcustom sound
   If mod_core_consts.APPSET.notification_content <> "" Then
       n.SetDefaults(False,True,True)
       Dim uri As Uri
       uri.Parse(mod_core_consts.APPSET.notification_content)
       n.CustomSound(uri)
   Else
   ' // use default sound
       n.SetDefaults(True,True,True)
   End If
   
   n.OnlyAlertOnce(False) 
   n.AutoCancel(True)
  
   mod_core_consts.APPSET.profile.notification_message_id = m.msgID
   ' // is this the messages thread we are viewing
   If mod_core_consts.APPSET.profile.current_message_store_view = m.fromID Then
       CallSubDelayed(MessagingItems,"insert_last_message")
   Else
      
       Dim p As Phone
       ' // 6+
       If p.SdkVersion >= 23 Then
           ' // setup notification
           If m.msgText.Length > 30 Then
               ' // long message
               n.BigTextStyle(m.fromName, cs.Initialize.BackgroundColor(Colors.white).Append("Expand").PopAll, m.msgText)
               svc_service.nNewMessage =  n.Build(m.fromName, m.msgText.SubString2(0,29) & "...", m.msgID , MessagingItems)
           Else
               ' // short message
               svc_service.nNewMessage = n.Build(m.fromName, m.msgText, m.msgID, MessagingItems)
           End If
       Else
       ' // 5.1.1-
           nm.Initialize
           nm.AutoCancel = True
           nm.Icon = "ic_chat_bubble_outline_white_24dp"
           nm.Number = svc_service.nNewMessageID
           ' // this will include the messageId so the MessageItems Activity can insert the newest message via the intent handler
           nm.SetInfo2(m.fromName, m.msgText,m.msgID, MessagingItems)
           ' // show notification
           svc_service.nNewMessage = nm
       End If      
       ' // notify
       CallSubDelayed(svc_service,"new_message_notification")
   End If
   
  
End Sub