diff --git a/server.js b/server.js
index 754a363..85d2731 100644
--- a/server.js
+++ b/server.js
@@ -1,6 +1,9 @@
 //dotenv
 require('dotenv').config();
 
+//ffmpeg
+var ffmpeg = require('ffmpeg');
+
 //nextcloud client
 const { Client, Server, GetFilesRecursivelyCommand, CommandStatus } = require("nextcloud-node-client");
 const server = new Server({
@@ -13,10 +16,10 @@ const server = new Server({
 
 //built-in
 const path = require("path");
-const fs = require('fs')
-const util = require('util')
-const { pipeline } = require('stream')
-const pump = util.promisify(pipeline)
+const fs = require('fs').promises;
+const util = require('util');
+const { pipeline } = require('stream');
+const pump = util.promisify(pipeline);
 
 //uuid
 const {
@@ -125,24 +128,47 @@ fastify.get("/", function (request, reply) {
 //'post'
 fastify.post("/", async function (request, reply) {
 
-  // -- "accumulate whole file in memory"
-  const data = await request.file()
-  const buffer = await data.toBuffer()
-  // <<< https://github.com/fastify/fastify-multipart/#accumulate-whole-file-in-memory
-  // ^--- this is needed.. dont understand fully, though. related to 'stream' receiving.
+  // stores files to tmp dir and return paths
+  const files = await request.saveRequestFiles();
+  let audiofile = files.find(f => f.fieldname == 'audiofile');
+  let pixelfile = files.find(f => f.fieldname == 'pixels');
+  // console.log(audiofile.fields.message.value);
 
   const client = new Client(server);
 
   //create unique folder ==> timestamp + uuid
   const folder = await client.createFolder("Storage/public/sound-parade/" + moment().tz('Asia/Seoul').format('YYYYMMDD-HHmmss - ') + uuidv1());
 
-  //files
-  console.log(data.fields.audiofile);
-  const file = await folder.createFile(data.fields.audiofile.filename, await data.fields.audiofile.toBuffer());
-  console.log(data.fields);
-  const text = await folder.createFile("message.txt", Buffer.from(data.fields.message.value));
-  console.log(data.fields.pixels);
-  const image = await folder.createFile(data.fields.pixels.filename, await data.fields.pixels.toBuffer());
+  //convert to mp3
+  let dir = path.dirname(audiofile.filepath);
+  try {
+		var process = new ffmpeg(audiofile.filepath);
+		process.then(function (video) {
+			// Callback mode
+			video.fnExtractSoundToMP3(dir + '/converted.mp3', function (error, file) {
+				if (!error)
+					console.log('Audio file: ' + file);
+			});
+		}, function (err) {
+			console.log('Error: ' + err);
+		});
+	} catch (e) {
+		console.log(e.code);
+		console.log(e.msg);
+	}
+  // await new ffmpeg(audiofile.filepath)
+  //
+  // await util.promisify((await new ffmpeg(name)).fnExtractSoundToMP3("converted.mp3"));
+
+  const file = await folder.createFile(audiofile.filename, await fs.readFile(audiofile.filepath));
+  // const text = await folder.createFile("message.txt", Buffer.from(audiofile.fields.message.value));
+  // const image = await folder.createFile(pixelfile.filename, await fs.readFile(pixelfile.filepath));
+
+  // //mp3 conversion
+  // console.log(await fs.readdir(dir));
+  //
+  //
+  console.log(await fs.readdir(dir));
 
   reply.view("/src/pages/entry.hbs", {});
 });