What to do with forbidden items after having repented

I have repented. But in my possession are some of the forbidden things
such as musical instruments, cassettes, films etc. Is it permissible
for me to sell them, particularly since they are worth a large amount?
Sale of such banned articles is not permissible in Islam. The Prophet
(peace be upon him) said: "When Allah forbids a thing then He forbids
its price (as well). " (i.e., its sale/purchase/trading.) [Abu Dawood,
and it is sahih] Also you know wellthat whomever you sell it to will
use it in a forbidden act; thus, it is not permissible for you tosell
it to him as Allah has prohibited this in commanding us: "laa
ta-'aawanu ala al-ithmi wal-'udwaan." (a translation of the meaning
being 'do not assist one another in sins and enmity')
And no matter how much you lose in worldly wealth, have faith that
what is in store with Allahis worthier and longer lasting. He will
compensate you with His grace, and His favor and His generosity.