Is it possible to change the Tempo Loop on the DrRex player, I have a tempo of say 89 for my whole song. But the tempo loop of the DrRex player is at about 130bpm. Can anyone help? thanks a lot!

what do you mean? it should slow down itself, but if you want to create a whole new sample which is at 89 by default, then you use recycle.

__________________
...

It doesn't matter what the tempo of the loop is. When you load a loop into DrRex, the loop will be automatically played in the tempo you have selected in the transport panel (bottom of the window).

If you want to listen to the loop in the tempo of your song (before loading the loop to DrRex) you should press PLAY button in the transport panel (your song will be played now), than click the "preview" button on DrRex and click browse loop button. When the list of loops opens you will hear the loops played in the tempo of your song.