Seconding.
The original Arcade game is up there with my favourite video game osts, and is included here along with the soundtracks to every other iteration of the game. The soundtrack to the new Bloom Declaration has an 'upgrade' version of the Arcade version's songs ~ sounds very cool. I'm especially interested in reading the liner notes, to see if the composer roles for Atsuyoshi Isemura and Yasuyuki Suzuki have been clarified at all.
For the time-being, you can listen to (and download) the Arcade version's soundtrack in VGM format here:
http://vgmrips.net/packs/pack/soldam-jaleco-mega-system-1
I recall the Original Soundtrack from 1993 being very hard to find; fortunately this is much more convenient and better than the MP3 format non-ost rip that was floating around here some years back.