Recorded phone calls made by HTC Desire 500, but they dont play with any media player.

[AC Question]

Do you want to help me to resolve this?Hello, I have recorded phone calls made by HTC desire 500 buth they dont play with any media player. Can you help me to recover them and listen what is in there. It`s so important to me and my child.

Here is the file format
MPEG Layer 3 audio file