Web Sites of Interest for Language Diction and Translations:
Lied & Song Texts Page [great site for finding translations] http://www.recmusic.org/lieder/
Aria Database [exactly what the name implies] http://www.aria-database.com/
Indiana University Music Library Internet Resources [probably the best set of links around for the serious musician]
http://www.music.indiana.edu/music_resources/
Dictionary (plus translations, thesaurus, and grammar).