Sure, there are now ways to put all your music on a flash and plug your flash into your player and go “laptop free.” However, you most likely still have your laptop full of music, along with backup drives, cloud storage, etc. Now, laptops store all your music and whatever DJ software you choose to use. Gone are the days of having to carry around heavy crates of records (thank God). In today’s DJ business, using a laptop computer is almost essential.