Hello Team, I am a newbie to FreeSWITCH.I am trying to make an IVR application in C#. I want to use inbound mode for answering an incoming call to the app and then play menu options and place a call to the another number. currently, my app is connected successfully to FreeSWITCH, receiving events but no playing the .wav file against the incoming call. how would this be possible? here is my code while (eslConnection.Connected() == ESL_SUCCESS) { eslEvent = eslConnection.RecvEvent(); eslConnection.Execute("answer", null, strUuid); eslConnection.Execute("playback", "C:\\FS_GIT\\Win32\\Debug\\sounds\\music\\8000\\suite-espanola-op-47-leyenda.wav", strUuid); Console.WriteLine(string.Format("{0}:Inbound CallId:{1}", eslEvent.getType(), strUuid)); Console.WriteLine(eslEvent.Serialize(String.Empty)); }