so... since we have first [and second..] cryo interactive games - megarace pack i belive we could (no.. we SHOULD) gently ask for more - CD version of DUNE!
as dune being one of the greatest adventure games ever (for me and some friends of mine..) it would be awesome to see DUNE CD here on GOG.
cd version have better graphic (rendered landmarks) and some filcks from David Lynch's Dune.
...i don't remember if it had new music :/ (music on my amiga was awesome! some of the greatest tunes i've heard on amiga)
long story short - what say you ? ;) do we need games like dune here on GOG? if so - is it possible to gog team have this game for us since they get some of cryos (motorace)

In most cases, it's not a matter of who developed the game, but of who published it. Usually, the publisher holds the rights. In the case of the Megarace 1+2 games, although they were published by Mindscape, Cryo apparently did hold the rights to them, but went bankrupt in 2002. In 2008, Microïds acquired all of Cryo's brands and intellectual properties, which is why they can license them for sale here on GOG. However, Dune was published by Virgin Interactive, which means that those rights might not have been in the batch that Microïds acquired.
That said, I'd love to see Dune on GOG. I'll go check to see if I've already voted for it.
[EDIT] I had ;-)

You should try to download the 'Spice Opera' CD.

I second that, Dune Cd would be awesome in GOG, no second thoughts on buying that. I loved that game very very much.