My 2 cents.
One of the reasons copying is allowed, even though there is a disclaimer on the back is as follows.
Lets say you bought a cd, and decided 3 years later to make a copy for a friend, wait what about being sold on condition of it not being copied? al pi halacha you would or should have the right to go back to the store or MBD and say I want out of the deal and he would give you the $20 bucks back, if he was willing to do so then you can’t copy the cd and must abide by the disclaimer or “deal” but being the store will laugh at you as well as MBD, (or any singer) the disclaimer is worthless and you can do what you want.
As long as you’re not selling it for a profit.
Another solution is to “lend” the copy to your friend so it’s always yours or your copy.
On a side note the goish music world will send a new cd if you send back an old one that’s scratched or won’t play, (it cost them five cents a piece) why won’t the heimish stores or singers do the same??