Argument about recording industry group fixing payment rates (6)
I believe the answer is:
tariff
'payment rates' is the definition.
'argument about recording industry group' is the wordplay.
'argument' becomes 'tiff' (I've seen this before).
'about' means one lot of letters goes inside another.
'recording industry group' becomes 'ar' (abbreviation for artists and repertoire).
'tiff' going around 'ar' is 'TARIFF'.
'fixing' acts as a link.
(Other definitions for tariff that I've seen before include "Table of fixed charges" , "List of customs duties" , "Import duty, tax" , "Fees schedule" , "Government tax on imports" .)