Julien-K

I saw them at a Projekt Revolution concert in chicago on Sat. Chester had to sing for them cause leadsinger was gone, they sounded good. I have 2 songs that i heard in sonic games. Waking Up from shadow the hedgehog, and this machine from sonic heroes. I like them, but I can find absolutely NO WAY of buying any music from them. I cant find anything, do they release cds or what? Anyone know how to get their music? Their own site doesnt even show where to buy, how do they get paid?