Net Instruments classifieds  
   Musical instruments; Dealers, makers, and sheetmusic. Free advertising with photos. Searchable database.
   http://www.netinstruments.com/

Absolute Guitar  
   Free photo posts of for sale and want ads for electric and acoustic guitars, basses, amplifiers and effects. Product reviews, free lessons, monthly specials and links
   http://www.absoluteguitar.com

Music Equipment Classifieds  
   Free classifieds for used electric, bass and acoustic guitars, amplifiers, drums, violins, cielo, bass, flutes, trombones, bass, wood, and wind instruments.
   http://www.musicequipment.com/

UsedFlutes.com  
   Free classified ads for used flutes, piccolos, and headjoints.
   http://www.usedflutes.com/

Musicians Buy Line  
   Used musical instruments, Musical Equipment, Used guitars, Used Drums, New Guitars, New Drums, Music and band instruments for sale, trade or buy - online music classifieds.
   http://www.musiciansbuyline.com/

MusiCity.com Swap Meet  
   Free music classified listings - buy, sell, trade, barter or swap new and old instruments, sheet music and accessories. Post music employment opportunities and announcements.
   http://www.musicity.com/classifieds/classifieds.cgi

The Musician's Classifieds  
   Free classified ads for musicians, connecting buyers and sellers of all orchestral and band instruments.
   http://www.brainplanet.com/cgi-bin/musician.cgi