Recently I've been wondering. When you acquire the perform action, you have to agree to SE's terms and conditions, one of which being not playing 3rd party music.
So, what can I play then? Does Final fantasy music count as 3rd party? Can I play music from FFXIV, or does that count as 3rd party too? What about the music that's technically from other FF games, like the first 24 man raid ost being from FF3? I'm so confused... :(