A source of pleasure or aid perhaps (5)
I believe the answer is:
radio
'a source' is the definition.
(thesaurus)
'or aid perhaps' is the wordplay.
'perhaps' is an anagram indicator.
'or'+'aid'='oraid'
'oraid' is an anagram of 'RADIO'.
'of pleasure' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for radio that I've seen before include "Transmitter" , "Wireless broadcast" , "Part of the broadcasting industry" , "It used to be called the wireless" , "Receiving device" .)