It sounds fancy, but it really just means streaming media you have stored in one spot to wherever it is that you are currently, over a network or the internet.  Sling Media is currently the tops in doing that, and Digital Trends has an interview with one of the founders.
“Sling Media CEO and co-founder Blake Krikorian recently took time out from a busy schedule to do an interview with Digital Trends regarding the founding of his company, their quick rise to stardom and how they continually need to reinvent themselves to compete in the ever changing consumer electronics marketplace.”

Here is some more Tech News from around the web:

Audio Corner