diff --git a/APIs/api.lua b/APIs/api.lua
index f992415..4910092 100644
--- a/APIs/api.lua
+++ b/APIs/api.lua
@@ -6,6 +6,7 @@ package.cpath = __api__.apiroot..'/?.so'
 require("std")
 require("utils")
 require("extra_mime")
+ulib = require("ulib")
 -- set session
 SESSION = {}
 
diff --git a/APIs/extra_mime.lua b/APIs/extra_mime.lua
index 3c219b4..9d2376b 100644
--- a/APIs/extra_mime.lua
+++ b/APIs/extra_mime.lua
@@ -41,3 +41,35 @@ function std.isBinary(name)
 		return bin
 	end
 end
+
+function std.sendFile(m)
+	local mime = std.mimeOf(m)
+	local finfo = ulib.file_stat(m)
+	local len = tostring(math.floor(finfo.size))
+	local len1 = tostring(math.floor(finfo.size - 1))
+	if mime == "audio/mpeg" then
+		std.status(200, "OK")
+		std.custom_header("Pragma", "public")
+		std.custom_header("Expires", "0")
+		std.custom_header("Content-Type", mime)
+		std.custom_header("Content-Length", len)
+		std.custom_header("Content-Disposition", "inline; filename=" .. std.basename(m))
+		std.custom_header("Content-Range:", "bytes 0-" .. len1 .. "/" .. len)
+		std.custom_header("Accept-Ranges", "bytes")
+		std.custom_header("X-Pad", "avoid browser bug")
+		std.custom_header("Content-Transfer-Encoding", "binary")
+		std.custom_header("Cache-Control", "no-cache, no-store")
+		std.custom_header("Connection", "Keep-Alive")
+		std.custom_header("Etag", "a404b-c3f-47c3a14937c80")
+	else
+		std.status(200, "OK")
+		std.custom_header("Content-Type", mime)
+		std.custom_header("Content-Length", len)
+	end
+	std.header_flush()
+	if std.is_bin(m) then
+		std.fb(m)
+	else
+		std.f(m)
+	end
+end
diff --git a/APIs/std.lua b/APIs/std.lua
index 81e9d2e..f70dc69 100644
--- a/APIs/std.lua
+++ b/APIs/std.lua
@@ -117,6 +117,7 @@ end
 function std.is_file(f)
 	return  std.is_dir(f) == false
 end
+
 std.ws.TEXT = 1
 std.ws.BIN = 2
 std.ws.CLOSE = 8
diff --git a/dist/lua-0.5.2b.tar.gz b/dist/lua-0.5.2b.tar.gz
index 148dfbf..73e5520 100644
Binary files a/dist/lua-0.5.2b.tar.gz and b/dist/lua-0.5.2b.tar.gz differ