stands for Limited Edition . It is a free, restricted version of the software that unlocks basic mixing features. To get rid of the time limits, watermark, and hardware restrictions, you need a Keycode .
Once you understand that limitation, you will be mixing like a pro in no time.
If you’ve just bought a budget DJ controller (like the Numark Party Mix, Hercules DJControl Instinct, or Pioneer DDJ-200), you’ve probably seen the dreaded “LE” watermark appear on your screen.