The technologys is great, and seeing the tune go past on the screen as a wave is really helpful - especially in a dark club.

But - I do think it encourages some people to just download music and never buy any. I understand completely that it's great for people who produce etc. who want to play their own stuff or their own edits - this is how I would use it mainly - but I know a couple of people who have it and just see it as their ticket to "never having to buy a record again". Which is a bit sad.