I think some DVD players support SACD, you'd have to check the manual. And of course most decent audio equipment should support it.
Unfortunately I don't think it's possible to play them on a computer. The laser technology is basically the same as DVD, but software isn't available for PC to decrypt and decode the DSD signal.
Also hybrid SACD can be played in a computer or normal CD player, but you need an SACD compatible player to take advantage of the high fidelity features the disc offers.