Estos enlaces no funcionan o la web no está activa:
- http://ww25.koumis.com/soundfx.htm
- http://www.dramaticpublishing.com/FreeSoundEffects.cfm (pasa a http://www.dramaticpublishing.com/freesoundeffects.php)
- http://www.a1freesoundeffects.com/noflash.htm
- http://www.prankcallsunlimited.com/freesoundeffects.htm
- http://www.ljudo.com/default.asp?lang=tSpanish&do=it
- http://www.meanrabbit.com/wavhtml/wavepage.htm
- http://www.flmnh.ufl.edu/natsci/herpetology/brittoncrocs/croccomm.html (pasa a http://www.flmnh.ufl.edu/birds/sounds.htm)