iOS Question Media Player does not work in ios 7

'Code module

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'Public variables can be accessed from all modules.
Dim pg As Page
    Private play As ImageView
    Private Label1 As Label
    Private Label2 As Label
   
    Dim mp As MediaPlayer
End Sub


Public Sub Show
   If pg.IsInitialized = False Then
     pg.Initialize("pg")
     pg.RootPanel.LoadLayout("test")
     pg.HideBackButton = True '<-- don't want to allow the user to return to the login screen
   End If
  
Main.NavControl.ShowPage(pg)

mp.Initialize(File.DirAssets,"8.mp3","mp")
mp.Looping= False
mp.play

Label1.Text= "8"
Label2.Text = "Lavel8"

End Sub
Sub re_Click
    mp.play
End Sub
Sub yes_Click
    Menu.all = Menu.all +1
    mp.stop
    f.Show
End Sub
Sub no_Click
    mp.stop
    f.Show
End Sub

Sub Process_Globals
   Public App As Application
   Public NavControl As NavigationController
   Private Page1 As Page
   Private mp As MediaPlayer
End Sub

Private Sub Application_Start (Nav As NavigationController)
   NavControl = Nav
   Page1.Initialize("Page1")
   NavControl.ShowPage(Page1)
   mp.Initialize(File.DirAssets, "01.mp3", "mp")
   mp.Looping = True
   mp.Play
End Sub