joanned10 yes you can share from ST3 in two different ways
1 you simply find the audio file in the ST3 folder and use the share function from there you can airdrop, email etc this only shares the file itself and no other data.
2 you save the file as .sta file, and then share that file with your colleagues, this file will also have all the text file and loop data , but can only be imported by ST3 and no other player.
I suggest stay away from Apple Music app and fully use ST3 as it does not screw you around like music app for numerous reasons.
ST3 is a serious music player Apple Music is designed to make Apple money.
But it’s your choice.
Good luck.