As far as I can tell (not having installed the KaraFun Player), the following should work (the same construct works with NotePad):
Code:
Sub Demo()
Shell "C:\Program Files (x86)\KaraFun Player\KaraFunPlayer.exe" & " " & _
"C:\Users\P\Desktop\Karaokes\Phil Collins - Another Day In Paradise.zip"
End Sub