Crossword Genius

Play leading roles in entertainment (3,2,5)

Ross

I believe the answer is:

act as hosts

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'entertainment' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'play leading roles' is the wordplay.
'play' becomes 'act as' (synonyms).
'leading roles' becomes 'hosts' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'actas'+'hosts'='ACT AS HOSTS'

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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