Praise be to Allaah.
We put this question to Shaykh ‘Abd-Allaah ibn ‘Abd al-Rahmaan ibn Jibreen (may Allaah preserve him), who answered as follows:
If they cannot be used for any permissible purpose – and these things can only be used for haraam purposes in most cases – then he has to destroy them. Whoever fears Allaah and does his duty towards Him, Allaah will show him a way out and grant him provision from sources he could never imagine.
For information on the rulings on music, please see question 5011 And Allaah knows best.