Few others:
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=1051 by Leon 'pancreas' Medado
http://www.btinternet.com/~pirates.retreat/Sounds.htm by PirateLord (derived from Atmospheric Sound Effects)
Then there's http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=913 by Pumaman. That will work with Morrowind Sound Enhancement or Atmospheric Sound Effects, check the readme. It
may work with PirateLord's mod but Expanded Sounds was released after Wilderness Sounds and I haven't heard anything definitive about compatibility.
And, if you have Oblivion, some muppet released http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=7245.