Collection of web-based resources for the major content areas (didn't see World Languages, though) -- all free -- from the USDept of Ed.
This is a great collection of tips on how to use various tools with students (K-12). Includes stuff for the content areas in addition to specific tools like GoogleDocs or GoogleEarth.
Another music search tool, but this one does let you look for songs by keyword. That's kinda cool.
Vast collection of online music. Streams (maybe that's how they bypass copyright? a paid-for license like internet radio?).