If you use a laptop, mp3s, even CDs maybe, you not a proper DJ.
Turntables. End of. Cut, scratch, bounce.....
As for HMV. Perfect example of how to run a business into the ground by poor Management.
A friend worked as a branch manager for a while in the late nineties.. they didn't even have email, says it all really. That and expensive long term leases on high street shops that hardly anyone was interested in using.
If you don't move forward in business, you are going backwards. Bye.