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 .
Many third-party voice memo or call recording apps use this naming convention for active recordings. RecordTMP (32) m4a
Sites like Restore.Media or Online Converter specialize in fixing M4A files that were cut off (e.g., phone died during recording). VLC Media Player can often play "broken" or
How to Recover Corrupted Audio Files