最近处理AU文件，下载的时候需要用到http另存，于是找到各种文件对应的Content-Type的值，收藏。

.* – application/octet-stream

.ai – application/postscript
.aif – audio/x-aiff
.aifc – audio/x-aiff
.aiff – audio/x-aiff
.asc – text/plain
.au – audio/basic
.avi – video/x-msvideo
.bcpio – application/x-bcpio
.bin – application/octet-stream
.c – text/plain
.cc – text/plain
.ccad – application/clariscad