Actually a see a single topic that involve the topic of alternative language pack.

Personally i'm looking for the Italian language pack but maybe this topic can be the reference for all the alternative language pack available.

If someone knows where to find the different language pack (plus expansions) i'll edit this post and add the link. Maybe i can host the file too, to be sure the website where the file is atm will not go offline like the one hosting the italian translation.

Language Files for Icewind Dale
Italian Language Pack (not verified)
French Language Pack (not verified)

Language Files for Icewind Dale 2
Italian Language Pack (not verified)

3 years later I found it. And even for Icewind Dale 2.
Updated the link, not verified because I have not enough time to check at the moment.