It's in the cloud. Welcome to your future.
https://en.wikipedia.org/wiki/Streaming_media
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Streaming media is multimedia that is constantly received by and presented to an end-user while being delivered by a provider. The verb "to stream" refers to the process of delivering or obtaining media in this manner;[clarification needed] the term refers to the delivery method of the medium, rather than the medium itself, and is an alternative to file downloading, a process in which the end-user obtains the entire file for the content before watching or listening to it.
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It's similar to Usenet where you could view [porn] files without downloading to your machine.