They're the emulated soundfiles from NES games, and they play in Winamp with a plugin.
Mew told me about these deelies, and i am now hooked on them. It took a little effort to confagle them, but now they work fine (except they all have the same tag until i actually play them, and they have no length listing) and they were so worth it.
Here's where you can get two plugins, but they didn't seem to work when i got those.
Zophar's got all the plugins that are worth mentioning, so just go for trial and error, really. Once you have the plugin, Check
here for a good, large collection (numberwise, the entire files is only 2 Megs!
) of files, and you should be set. :o