Well, I think in the case of physical objects with a logo on them the law of first sale would protect you there. Otherwise you wouldn't be able to sell, say, your old Ford Pinto because it had a copyrighted Ford logo on it.
I definitely see where you're coming from. The biggest difference, however, is that I am selling the work and claiming it as my own.
John Smith wouldn't sell his Ford Pinto under the pretense that it was another fine product from John Smith.
In the case of the floppy, though, I am not claiming the physical disk as my work of art but rather its contents. So, like the album CD, which I did not manufacture, what is being claimed as mine seems to be virtually one in the same.
This is why I ask, though--there are technicalities that I know I'm not aware of.
These sorts of distinctions have such murky borders of definition...