If the guy on the tape is indeed swedish and speaks in swedish on the tape, then I've no explanation for it, exept for the fact that he might have some defect in the oral region. BUT if he, on the other hand, is Swedish and is speaking in english, he's just trying to sound a bit more american and thus americanize the pronounciation. No swede would EVER pronounce it like Yan sir red, trust me. But it really doesn't matter as no one in the business would ever ponder over what a "Yan sir red" -saw is...
/Ola - From the land of yewn'serre:d and hu:s'kvarna -