A consistent message over the last few years has been the increase in sales of digital music over that on CD. Data released at the end of 2011 shows that the trend continues. It also looks like consumer behaviour is changing in that the focus is increasingly on individual tracks rather than collections of tracks. Here’s a report from the BBC. I visited my local branch of HMV in Milton Keynes and it is clear that this chain is taking the threat very seriously in that it had an excellent section devoted to technologies such as the iPod and well-trained staff who seemed to know what they were talking about.