That means they're only ripping stuff that, while it may be very hard to get hold of (test presses, DJ promos etc) - they're not ripping dubplates. At least one person could get a copy of the original at the time the rip was made.
It doesn't mean that at least one or more people have the sour release. Any unauthorised copying of any copyrighted materials (and all tracks are copyrighted by default as intellectual property) is prohibited under UK law, INCLUDING making a backup copy of CDs that you legitimately own. That's legal in the US, not in the UK.
Mixes don't contain entire tracks - you only hear mixed versions. It's up to you if you try and do a lame-ass cut 'n paste and try and pass that off as a full copy of a track, but downloading mixes aren't quite the same as downloading dubs that you shouldn't have access to.
Up to the DJ whether they want to put the dubs that THEY have into one of their mixes. Bit of free advertising for the producer at any rate, so I don't think they mind toooooo much (so long as they've not asked for the dub to be kept hush-hush until more general release information is sorted, as some producers do sometimes... A little oddly, I think).
hi, could anyone give me instructions how to access and download stuff from mirc? i live in a country where d'n'b is not popular and there are no other ways for me to get d'n'b tunes but to download them (really). i understand noone will put this kind of information in the forum so here's my email email@example.com. thank's in advance.