Praise be to Allaah.
Firstly:
We praise Allaah for having
enabled you to repent and having guided you to the straight path. We ask
Allaah to guide you and us, and make us more steadfast.
Secondly:
What you have mentioned
about it not being permissible to give to others that which will help them
to do haraam things is correct.
Based on this, what you
have to do is erase the music that is on these CDs, then make use of them by
copying useful things onto them, or giving them to a charity to copy useful
things onto them.
If you cannot copy anything
onto them, then you have no choice but to destroy them. It is not
permissible to give them to someone who will listen to them, whether that is
by selling them or giving them, to a person or to a store, because that is
helping in sin and transgression.
See also question no.
13754.
And Allaah knows best.