Very good site for sound effects and 3D object is http://3dcafe.com/asp/freestuff.asp

Also you can try this
http://gmresources.5u.com/
This is search engine for GM resourses (graphics, sounds, scripts and tutorials for Game Maker)

Also, some graphics/sounds collection are provided on my web site but server is slow. Here are the links:
http://free.top.bg/darklight/gamemak...ourcepack1.rar - midis, waves and grapics
http://free.top.bg/darklight/gamemak...s/melodies.zip 10 midi (27kb)

http://free.top.bg/darklight/gamemak...urses/midi.rar - 212 midies