Received whats app audio message in firefox 2.5 is broken

[sap-nocops]

I've got a flame and I just upgrade the system to Firefox OS 2.5 (nightly channel). With Firefox OS 2.2 everything was fine. Now when I receive a whats app audio message I can download it but when I open it the music player opens but I can't reproduce the audio. I tried to copy the audio file on my laptop and open it with vlc but no luck, it doesn't work with vlc either.

If you need any help or more information just tell me. I am a programmer by the way