Unable to permanently remove silent portion of audio

So I’m trying to make a seamless loop but I can’t because everytime I delete that portion that I highlighted, it just reappears when I reimport the file. It’s at the beginning and at the end.


Don’t use MP3 format. See: https://forum.audacityteam.org/t/short-silence-in-the-beginning-when-exporting-to-mp3/39941/1

But I have to, because I’m trying to replace the music within a game. And the game only uses m4a format

m4a is a container format (see: https://en.wikipedia.org/wiki/MPEG-4_Part_14). You need to know what encoding is being used. “MediaInfo” should be able to give you that information - if you don’t have it already I would advise that you get the ZIP version of MediaInfo rather than the installer as the installer version may include adware or similar.

Nvm thank you for the help, I converted it to a .wav file and I’m converting the wav file to m4a by itunes