It was slightly easier getting the music when Kirill hosted it himself, but I can certainly understand why he wouldn't want to have to pay to give away some of his work.
There is a
Divine Divinity Music Extractor (72KB) by BrainBox (see also
DD music) which will extract the music to ogg files. With Beyond Divinity the music is already in individual ogg files, so can be copied wherever you wish directly.