Music

Audio Asylum
Searchable knowledge-base focusing on pro audio DIY, FAQs, and guides.
http://www.audioasylum.com

Audioholics
Provides A/V hardware and software reviews, equipment buying guides, system set-up tips, and user forums.
http://www.audioholics.com/

eCoustics Audio Reviews
Editorial and Consumer reviews on both home and pro audio products.
http://www.ecoustics.com/Home/Home_Audio/

Gearblasters
Find similar audio products within a price range.
http://www.gearblasters.com/

Guitar Reviews
Reviews on electric and acoustic guitars written by industry professionals.
http://www.proaudioreview.com/par/musician_reviews/index.shtml

Woodwind.org
Information on woodwind instruments, mailing list, links to wooodwind articles.
http://www.woodwind.org/