Fancy stereo discs occasionally used for the select few (8)
I believe the answer is:
esoteric
'for the select few' is the definition.
(esoteric can mean for a specific audience)
'fancy stereo discs occasionally' is the wordplay.
'fancy' indicates anagramming the letters.
'occasionally' means one should take alternating letters (letters taken at regular intervals or occasions).
The alternating letters of 'discs' are 'ic'.
'stereo' is an anagram of 'esoter'.
'esoter'+'ic'='ESOTERIC'
'used' is the link.
(Other definitions for esoteric that I've seen before include "Secret, mysterious" , "Taught to a select few" , "Occult" , "exclusive" , "Mystic" .)