Best route to go to get rid of the stuff is to bring it to a show of some sort and give it away. I've been doing this with analogs and burned CDRs for years.
Trust me, it will go, and usually with a smile on someones face.
I gave away 400 CDRs at the Toyota Park 09 show - they were gone in less than an hour.
There is always someone around with a working tape deck still in their car - even if it is just for the ride home, and then they toss it.