Dark Sea music page (
http://ecco-darksea.com/?p=4).
I guess I'm too late, but I'll share this link anyway because it's no trouble at all to do so.
This site has the music from the Sega CD versions of Ecco the Dolphin and Ecco II: Tides of Time in mp3, and OGG format.
They also have site exclusive, super-awesome, not-edited-for-game-use versions of "Defender of the Future" music, straight from the composer himself.
It's flac actually, not ogg, and that's te site i linked him in a pm hehe.