This is the only thing that really sucks about the safehouses, you cannot use the record player! It would be cool if you could actually put a record on the turntable and the vinyl records were not classified in the game-files as junk.
I agree! You can use the record player in the 100k safehouse. But yeah, it would be cool if the vinyls were usable, i.e. the Legendary ones you can buy from the store. It probably has something to do with limiting the number of songs in the game, but they should have just connected the vinyls to some of the songs that already are in the game!