QUOTE(stardustsa2008 @ May 9 2008, 12:26 PM)

In Denon DJ do you just copy your whole collection to the database and then trawl through your collection to
make up your new playlists ?
Yes. Folders waste space, in a way which playlists do not.
You can create playlists using the Music Manager software (get the latest version from the Denon DJ website, and check that your 2500 has the latest version of firmware in it too, on the same site).
What is particularly good with DN-HD2500 playlists is that you can not only name all your playlists, but you can create "Category"s to put your playlists within. EG: I have a category called "Background Music", within that category, I have a playlist called "80's soft rock", "80's ballads", "70's easy listening", "80's cocktail music", "90's instrumental", "Christmas background" etc, etc... I have another category called "Strict Tempo / Ballroom", and under that I have playlists called "Waltz", "Tango", "Foxtrot" etc...
Playlists can have upto 99 tracks each (approx 6.5 hours of music), and you can choose a different playlist on each side of the DN-HD2500, and select "Relay Play", so that it plays a track from the left-hand playlist, then crossfades into a track from the right hand playlist, then crossfades into the next track on the left hand playlist...etc..etc..etc... Ideal for say, a mixed age audience....have background music for 20 year olds on the left hand side, background music for 50 year olds on the right hand side, and...voila..hey presto.
You can have upto 1000 playlists per harddrive, and those playlists are available to any DN-HD2500 that you plug that hard drive into.
You can also store upto 99 tracks into the playlist called "Favourites" and set the DN-HD2500 to start playing (and crossfading) all the tracks in that playlist, automatically, just a few seconds after power is switched onto the 2500. I've used this in the past for when I've been setup at a venue for more than one night running, and they've needed background music from say...6:30pm. Just use a homebase/B&Q timeswitch, then stroll in at 9pm when the customers are on their coffee and mints, and take over.
There are some fantastic developments for DN-HD2500 users, due out soon, which I've been using for a month or so now, which I'm pretty sure you (and others) will find very very useful. Keep watching DJU for info on when that free-of-charge, user loadable enhancement firmware is launched.