All file extensions
.M4A File
What is it?
M4A is a common file extension for AAC-encoded audio wrapped in an MP4-style container — the default format iTunes and Apple devices use for music and voice recordings.
How do I open it?
Plays in iTunes/Apple Music, QuickTime, VLC, and most modern media players and phones.
Is it safe?
Yes, M4A only contains audio data.
Can I delete it?
Safe to delete once no longer needed.