[quote name='Edge']Actually quick question regarding Out of this World: who actually owns the rights to it? From the sound of it, Virgin purchased the rights to the game back in the 16 bit days, but now it sounds like the creator still has the rights to the game? How did the person who converted it to the GBA get the rights? It's a little hard to understand what it says on the webpage using a translator, and I sure don't know French.[/QUOTE]Actually, from what I hear, Foxy (the developer of this port) had been in the middle of making this GBA conversion a little over a year ago when Eric Chahi, the original creator, contacted him.
I believe this is when the got to talking about making a legitimate, commercial GBA port of the game. Eventually, Chahi bought back the rights of the game, and was able to use the original assets (graphics, music, sound effects, etc.) and assisted Foxy in making this. They supposedly shopped it around but no publishers wanted it, so they decided to just release it for free.
Immediately after the original game came out, Chahi had very little input with the games and ports that followed - he had nothing to do with Heart of the Alien or Flashback, for example. Different teams at Delphine Software made those. He did later make Heart of Darkness, which I have yet to play but I hear is a very good spiritual successor to the series. Anyway, that's probably why the Sega CD version had different music.
I'd prefer to stick to Chahi's version anyway, since he was the original creator, after all.