Hi Raffaele,
Why only in 64studio and not in plain Debian?
We have been contributing to Debian for years. The reason for a specialist distribution is that official Debian does not support multimedia desktop/laptop users 'out of the box'. These users are a minority in the Debian community, so this shouldn't be a surprise.maybe if they did it on debian nobody would pick up 64 studio anymore...
or just because of "ltd" in their name.
There are many commercial organisations that contribute to Debian, many of them much larger than us.
Cheers!
Daniel