createSoundObject not accepting Stereo.

[VijaiAaditya]

as per the https://developers.google.com/vr/reference/android/com/google/vr/sdk/audio/GvrAudioEngine#createSoundObject(java.lang.String)
public int createSoundObject (String filename) method should accept the stereo channel file as input, but was not accepting, is there any explicit configure need to make on this or its a bug

or is there any setting need to make against createStereoSound() to convert the output to mono.

I want to play stereo as mono.