Hmm, I seem to recall something from 4 being in SOTW one week. It was the port town music from the first part of the game...Nothing else from 4 or 5 that I recall though. Can't tell you if it placed or not, but I gave it points.
Eh, I don't feel Suikoden has quite reached the level that, say, Wild Arms has with exposure (2 WA in the top 8 of BSC most likely and around a dozen in the entire contest, from various series composers). It's another case where the composers have changed a lot, so a Suikoden III tune isn't equivalent to a Suikoden 1/2 tune. And I'm not a fan of anything related to III's music, but I love 1/2 and some of 4/5, so that should give you some idea of how different each composer/group was. On that same note, from something I saw earlier...Phantasy Star isn't equivalent to PSO music, despite the name. Totally different styles of music, totally different composers, etc.
Jam it back in, in the dark.