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I have never heard anyone pronounce it that way. In Norwegian, the EI is pronounce like the a in "Ash" and ee after. The rest is pretty straightforward. If you know any German, the word "Schwein" is similar, just without the sh-sound and a v instead of a w.
I think I've heard it pronounced SVAYN too, but that is probably not the common way. As for the other Scandinavian Languages and Icelandic, I don't really know.