Uploading my recorded set

So basically I tried and uploaded my recorded set to my laptop and after the transferring is over, I try to click on my mp3 but it opens and says there’s an error. I don’t know if its an error on my part or the apps. I try to upload all of my recordings but they all come out as an error and the mp3 can’t play.

Help please!

The recordings are in AIFC format not .mp3. Which app did you use to play the recordings? Please try playing it with iTunes.