As shown here: Rumic Theater (http://www.furinkan.com/rumictheater/music/index.html)

The only torrents out there for the OST are Russian and they have no seeds/peers. Cannot find any other links for this that are not dead.

Rumic Theater: The Supergal Original Soundtrack (https://mega.co.nz/#!eYdhVBaL!Vc1Qx4XD5_azTEhDWiDBeY22embkWY3_9htWOBb R_iU)