Another practical method for checking out loops, is to load them "on the fly", i.e. during playback. This is especially useful if you want to check out a number of loops against other sequencer data and patterns previously recorded. Proceed as follows:
1. Activate Preview on the Dr.Rex and start sequencer playback.
The REX loop and the sequencer are synced.
2. Now load a new REX file by using the Browser in one of the usual ways.
After a brief silence, the new file is loaded, and sync is maintained.
3. Repeat step 2 as necessary until you have found a suitable loop.
If you are trying out loops within the same folder, the quickest ways to select a new loop is to use the arrow keys next to the loop name display.
Or, you can click in the loop name display and select a new loop from the pop-up menu that appears.
Note that the Preview function is not the "real" way of playing back REX loops. If you want to use the loop in a context with other devices, you should transfer the REX slices to notes in the sequencer.