Twin directories of sounds:

[DIR]  ftp://ftp.dit.upm.es/linux/mirrors/ftp.gnome.org/teams/art.gnome.org/archive/themes/sounds/
[DIR]  ftp://ftp.csus.edu/pub/NeXT/sounds/
[DIR]  ftp://ftp.cs.ust.hk/pub/horner/sounds/
[DIR]  ftp://ftp.epson.it/pub/utilities/sounds/
[DIR]  ftp://ftp.redsword.com/tjacobs/public_ftp/sounds/
[DIR]  ftp://ftp.freechess.org/pub/chess/audio/sounds/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/epoc/files/sounds/
[DIR]  ftp://ftp.gno.org/pub/apple2/gs.specific/gno/sounds/
[DIR]  ftp://ftp.gno.org/pub/apple2/gs.specific/orca/sounds/
[DIR]  ftp://ftp.gno.org/pub/apple2/gs.specific/system/sounds/
[DIR]  ftp://ftp.gno.org/pub/apple2/gs.specific/sounds/
[DIR]  ftp://ftp.gno.org/pub/apple2/appledos33/sounds/
[DIR]  ftp://ftp.gno.org/pub/apple2/prodos/sounds/
[DIR]  ftp://ftp.etext.org/htdocs/Mailing.Lists/house/neilfinn/sounds/
[DIR]  ftp://ftp.etext.org/pub/Zines/UnitCircle/sounds/
[DIR]  ftp://ftp.uplanet.ru/galaxy/sounds/
[DIR]  ftp://ftp.dgp.toronto.edu/pub/telepresence/sounds/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/CFAN/misc/sounds/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/ll-plugins/sounds/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/openpanorama/documents/sounds/
[DIR]  ftp://ftp.amsat.org/amsat/misc/sounds/
[DIR]  ftp://ftp.fvwm.org/pub/type-o/sounds/
[DIR]  ftp://ftp.nmt.edu/pub/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/mswindows/nt/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/mswindows/sounds/
[DIR]  ftp://83.174.206.8/pub/soft/Messegers/mirand(jabber)/Miranda (Jabber)/sounds/
[DIR]  ftp://83.174.206.8/pub/soft/Messegers/MirandaMDpack/sounds/
[DIR]  ftp://83.174.206.8/pub/soft/Messegers/Miranda IM zeleboba's pack 1/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/misc/grant/pkgstat/20040711.1811/leftovers-sun4u/usr/pkg/share/cfclient/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/misc/grant/pkgstat/20040711.1811/leftovers-sun4u/usr/pkg/tnt/work/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/misc/grant/pkgstat/20040716.0710/leftovers-sun4u/usr/pkg/share/cfclient/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/misc/grant/pkgstat/20040716.0710/leftovers-sun4u/usr/pkg/tnt/work/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/misc/grant/pkgstat/20040121/leftovers-sun4u/usr/pkg/share/cfclient/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/misc/grant/pkgstat/20040131/leftovers-sun4u/usr/pkg/share/cfclient/sounds/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/misc/grant/pkgstat/20040131/leftovers-sun4u/usr/pkg/tnt/work/sounds/
[DIR]  ftp://80.250.162.180/2010/Svyatoslav.Bizyuk/Sergeev_new/Лекция_Розоцветные_Углубленное изучение/DATA/components/sounds/
[DIR]  ftp://ftp.cs.bath.ac.uk/pub/dream/documentation/sounds/
[DIR]  ftp://ftp.jb.man.ac.uk/pub/tob/sounds/
[DIR]  ftp://ftp.soc.soton.ac.uk/pub/pwc101/slackware/slackbuilds/games/cube/packages/sounds/
[DIR]  ftp://ftp.free.net/networking/management/SNM/sounds/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/WinSite/win95/sounds/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/WinSite/winnt/sounds/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/WinSite/winxp/sounds/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/WinSite/handheld/sounds/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/WinSite/win3/sounds/
[DIR]  ftp://gnjilux.cc.fer.hr/pub/spectrum/sounds/
[DIR]  ftp://ftp.actrix.gen.nz/.vol3/macintosh/sounds/sounds/
[DIR]  ftp://ftp.actrix.gen.nz/.vol3/macintosh/sounds/
[DIR]  ftp://ftp.linux.org.uk/mirrors/ftp.gnome.org/teams/art.gnome.org/themes/sounds/
[DIR]  ftp://ftp.nk.ca/pub/Blakes7/sounds/