["mp3"] = "audio/mpeg";
["ogg"] = "audio/x-vorbis+ogg";
["wav"] = "audio/x-wav";
+ ["aac"] = "audio/aac";
["mpg"] = "video/mpeg";
["mpeg"] = "video/mpeg";
["avi"] = "video/x-msvideo";
+ ["mov"] = "video/quicktime";
+ ["mp4"] = "video/mp4";
}
-- "application/octet-stream" if the extension is unknown.