Trim an audio MP3 file, and paste in new field

I’m looking to find a way to trim (or crop) of an audio mp3 file (in an attachment field) and paste it into a different field based on the timestamps I give it.

I’m unable to find anything out there that can do this in the background (like Zapier), and am wondering if a script could do this.

Thoughts? Thanks!

Still looking for a solution for this, if anyone can help. Thanks!