DaveT but also I notice that when a song is speed shifted, the actual song length also doesnt change to the new time
Peter explains why very nicely, but i only speed shift in my editing process, as this works best , doing it in ST3 with average audio quality sounds bad, i only use it live when absolutely necessary, i never use it as a permanent change, and if you do it live you haven't got time to think about time stamp changes or length of song as you have just been stressed enough just changing the speed , singing, playing an instrument on stage and trying to look professional to the audience, i think some things are not really that important to worry about, but thats just me.
I rather see a faster and simpler editing process, because a lot of time is used up in that.
And as they say TIME IS $.