Much as manufacturers might wish people to buy an entire range of matching products, consumers typically purchase devices and displays from several different brands, and yet still want them to work together transparently. They don't care whether media was delivered via a broadcast network or if it resides on an optical disc, they simply want all devices to cooperate intelligently so that they can easily access their media from any device - and they don't necessarily want to have a single hub or a personal computer at the heart of everything. Seamless media access among devices should 'just work', like plugging in an electrical appliance.
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