Do you know the name of the song?
Japanese won't really help. Even if you did manage to find the song.
A japanese mp3 site would force you to pay for the download.
It's probably near impossible to find a song that is that old.
This is the same problem that I had with Flower Sun & Rain.
(Thankfully I can extract most of the songs from the game disc. Still missing a shit load of cuts from the game though.)
Hell most of the cds that I bought back in 1998 are all practically impossible to find now.
Unless you went scavenging inside used stores in Japan.
I myself have been looking for the Golgo 13 version of "Turquoise blue"
Only to find out that a Golgo 13 version doesn't exist outside of the anime.
Turquoise Blue Live version
http://www.youtube.com/watch?v=25p6d-e5tOA
While the official version of the song still sounds hot.
It's missing the drop dead sexy female vocals that sing along during the hook from the Golgo 13 version.
It's a sad shame that the Golgo 13 version was never officially released.
http://www.youtube.com/watch?v=cqaom_UcAIY
That shit sounded like straight up pimp music.
Galbadia Hotel to see if either of them had the soundtracks for this series
Galbadia barely has anything. (That I want.)