M4a: Recordtmp (32)

If the file doesn't have a proper dot before "m4a," try renaming it to RecordTMP (32).m4a to see if your computer recognizes it.

VLC Media Player can often play "broken" or unfinalized files that other players can't. Import as "Raw Data" in Audacity: Download Audacity . Go to File > Import > Raw Data . RecordTMP (32) m4a

How to Recover Corrupted Audio Files

This can sometimes bypass a corrupted header and pull the actual audio out. If the file doesn't have a proper dot