That aside, I think it would be safer if you just stretched the whole mix to the new tempo, after export, instead of trying to do this to all the bits and pieces of audio events. There’s also an issue that when you record in a loop, the audio files might get a wrong tempo definition. (again, thanks raino) In that case, have a look in the pool and see if something’s wrong. But, I’d still stretch the whole file. I don’t know, it seems easier to me.