ed

you are saying two different things.That different dvd players will sound different and that different cables will sound the same.Different dvd players may have slight differences in sound due to better quality internal components reading and transmitting those 1's and 0's.If you listen to a $29 dvd player and a $2500 player may sound a little better,but even then it may be hard for the average person to detect.But then you also say different cables sound different,but the cable comes in after those 1's and 0's have been read and sent to the output stage.In the analog world cables make a difference,digital world no.
bill