absoluty nothing the licence key is the regerstration for the software
not shure if the demo version will allow you to use the ion ddj unit ,but a least it will familiarize you with the software ,,whished you had of checked on the fourm before the purches ,, could have offered you better alternatives,,
you are welcome to ask
about the software and options for you ,, but with out the licence key the options are limited to purchesing another software licence if you want to use the controller with Cross
try out the demo
the link for the product comparison
http://www.mixvibes.com/content/product ... comparisonthis is a little outdated
where at version 2.3 at the present time,,
and the free ver doesnt allow MIDI control
