Puzzles get credit, sound in some of the clues (9)

'puzzles' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Perhaps there's a link between them I don't understand?

'credit sound in some of the clues' is the wordplay.
I cannot quite understand how this works, but
'credit' could be 'cr' (abbreviation) and 'cr' is present in the answer.
'some' could be 'a' and 'a' is found within the answer.
'of' could be 'o' and 'o' is located in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
The remaining letters 'sics' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'get' is the link.

Can you help me to learn more?