Anime sound bite repository? Does anyone know if a good anime sound bite repository exists? I know someone who is considering incorporating silly/hyperbolic/cute sound bites from various animes into her reviews as reactionary bits.

Unfortunately YouTube doesn't allow sorting or searching clips by time length (of seconds) and I haven't seen too much on archive.org. I can't think of other good sources aside from manual extraction.
One that I know is NiconiCommons (Japanese) (sister site of NicoNicoDouga, a Japanese video sharing site). Basically it's a site where users can upload and share resources/materials (image, sound, video, etc) for people to use.

You can browse all the audio materials, or search the one you want.


  
  Click Advanced Search button
  
  
  Input the Tag or Keyword in Japanese
  
  
  Tick 音声 (onsei, audio) only
  
  
  Press Search button
  
  
  


Alternatively, replace the [tag] or [keyword] from these URL: 

Tag-only     : http://commons.nicovideo.jp/search/tag/[tag]?s=d&amp;o=d&amp;t=2&amp;sc=1
Keyword-only : http://commons.nicovideo.jp/search/keyword/[keyword]?s=d&amp;o=d&amp;t=2&amp;sc=1
Tag &amp; Keyword: http://commons.nicovideo.jp/search/hybrid/[tag]/[keyword]?s=d&amp;o=d&amp;t=2&amp;sc=1


Example: List of JoJo's Bizarre Adventure sound bites.

However, since these are all uploaded by users, you may not find what you want. You also need to have an account to be able to download, but the registration page is available in English.