Complex sentence: Although royalty free music is royalty free to the purchaser, producers/composers may still receive royalties from broadcasting radio or television stations via their Performance Rights Organization, for example, the PRS in the UK or ASCAP or BMI in the USA.
Split into simpler sentences: Although royalty free music is royalty free to the recipient, producers/composers may still receive royalties for music played on radio, or used in television. This is via the local Performance Rights Organization, for example the PRS in the UK and ASCAP in the USA.