Mahalo is a new "human-powered" search engine, i.e. the editors decide which sites to include. I searched for 'music torrents' but it didn't have anything. It did suggest a page for "2007 Music Festivals", of which the first featured site was for the Dirty Three-curated ATP earlier this year: both the linked page and the festival line-up page have already disappeared, and there's no mention of the more recent ATP vs The Fans (last month), or the upcoming Portishead-curated Nightmare Before Christmas ATP.
See also Paul Lamere's comments on the human-curated Pandora in his talk on Sun's "Search Inside The Music" project at the recent JavaOne conference (slide 12).