utawarerumono = the "u" (u sound from "wu"), "ta" (sounds like the "ta" from talk), "wa" ("wa" from walk), "re" (sounds like ray), "ru" (like "roo" from root), "mo" (the mo sound in mobile), and finally "no" (the no sounds like know)
so put it together u-ta-wa-re-ru-mo-no and you should pronounce it correctly...hope that helps