Sounds like this is just an excuse to pay for the music again, and again, and again. Do club owners actually check if you have this license. And if they do, is there some requirements that they enforce the limits?
A modest proposal. If there is a limit on the amount of media on your computer, I suggest you limit yourself the the statutory maximum. Then get a large external HDD (250 GB or so) and keep it in your bag or something. Once the Music gestapo leaves plug that bad boy in and whammo, you are good to go.
Well then Try this...
Some background. In the UK there exists an entity called PPL Public Performance Limited, a little or a lot like RIAA in the U.S. In their effort to drag in more revenues and recurring revenues at that, they dreamed up the notion of requiring a Digital DJ license for DJ's in the UK. This wonderful new 200 pound per year license is in addition to all existing licenses and targets Digital DJs (DJ's like myself who cause all our Mayhem in the clubs using a laptop and software) specifically and unfairly.
This wonderfully well thought out genius constructed license is required by all digital DJ's who play public performances. What is horrific about the license, is that it is to merely STORE music on a laptop. You should read the license FAQ on their WebSite at http://www.ppluk.com/ppl/ppl_lf.nsf/PDFs/$file/Digital_DJ_Licence_FAQs.pdf
The rules are totally onerous and ignorant of the market and the way most DJ's function. It limits the number of digital tracks you can have in your library to an absurdly small number (quite a reasonable number for a home user but not for a DJ). You have to submit if requested, to inspection and submission of track lists, And, coming soon they say, MANDATORY ENFORCED Proprietary DRM.
FWIW the same laws exist in Canada and I fully expect this useless piece of licensing to show up in the U.S. and elsewhere in the coming months and years.
Clearly real DJ's were never consulted in its crafting and virtually zero DJ's in the UK are able to comply with the license as written, But in order to practice your craft publicly, you must agree to and possess this license.
Lastly, Humorusly, despite it being required most UK DJ's do not know this is now law and required.
Great job PPL!