Revenue from licensed digital-music distribution doubled in 2005 to $653 mln, according to PricewaterhouseCoopers, which estimates that by 2010, digital music will be a $20.7 bln market. Consumers spent only $1.1 mln on online movie-rental subscriptions and $1 mln on digital-streaming movies in 2005. Digital-streaming services are expected to outpace online rentals, by 2010 generating $400 bln in annual spending while online rentals will be a $3.2 bln business.