I'd like a warning. Or software to track the number of changes to a file in a given period. My mp3 and jpegs will rarely change so they could be locked in some

I'd like a warning. Or software to track the number of changes to a file in a given period. My mp3 and jpegs will rarely change so they could be locked in some way. There are a number of approaches which could be taken. The file system/os should provide the user with enough functionality to defeat the attacker.