If you have PS3 for your MP3's ect you can use your PS4 for new games..
Funny how so many people went on and on that the 360 was so much of a better console as its aimed at more of a gaming thing rather than the PS3 being a multi media..
Now its the other way around its a catastrophe how dare Sony make it a pure gaming console.... Now multimedia is important lol.. (boggled minds)
Don't bother me TBH my PS3 and PC is hooked up to my telly and surround sound
Xbox one buyers I'd be more concerned at your HD outputs over playing MP3's OUCH...
http://www.extremetech.com/gaming/168630-xbox-one-graphics-output-in-900p-worse-than-ps4s-1080p