Here's some useful stats from this article, about Google buying a 10%, $50m stake in the video distributor Vevo (the joint Sony/Universal venture that you'll have come across if you've watched a few videos on YouTube, given how much of the music industry their artist sales represent):
Earlier this month the Entertainment Retailers Association reported that downloads of music, TV shows, films and video games topped £1bn in the UK for the first time in 2012. Digital music sales grew but revenue from physical singles fell by 44% year on year and albums dropped 11%.The cinema industry and CD sales remain strong but, like newspapers, which are also seeing circulation declining rapidly as more people access their news online, may not have a bright future. The record set by Skyfall, 2012's Bond movie, may never be beaten: it became the first movie to take in over £100m at the UK box office by the last week in December 2012 (it was already the biggest ever UK cinema hit, and topped $1bn worldwide).