Thinking things through from there then, it seems to me that while the issue of quality of the digital music is usually a non-issue, so to speak, it does become one when people are playing mp3's – which is the preferred file format for many DJ's playing off CD's as they can be easily downloaded and burnt to disk from many a website.

So what is the difference in quality between mp3 and vinyl, as this is the most commonly used digital format, discounting PA's played on laptop's where the WAV file is present?