You buy it.
ebay
Best buy
One can buy the original soundtrack to the 1983 movie Scarface from sources such as Amazon and iTunes. Another company that sells this soundtrack is CD Universe.
You can buy the soundtrack from places like Amazon.
You can buy the soundtrack at a store such as Walmart or a music store, or you can buy it online, or you can listen to it online at www.youtube.com.
at dominos
Rob barbato from a band called Darker My Love. But i think he's working alone without the band as for the sony bravia domino effect soundtrack.
iTunes, its actually the whole Orange Box soundtrack.
You can go to Youtube, Itunes (you have to buy the soundtrack though), and if you have the name of the song type it into youtube and it should be there.
As of June 2015, there is no soundtrack available for purchase, neither physical nor virtual.
ebay