Spooner's fish gone -- work on the net! (7)

I believe the answer is:

podcast

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'work on the net' is the definition.
(a podcast is an audio publication released online)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for podcast that I've seen before include "Web feed" , "downloaded recording" , "digital recording" , "Downloadable file (of, eg, broadcast)" , "Audio file distributed over the internet" .)

I've seen this clue in The Telegraph.

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