removed extra unnecessary .mp3 extensions

main.ts

@@ -297,7 +297,7 @@ function downloadSong(downloadLink: string, folder: string, filename: string): P
   return new Promise((resolve, reject) => {
     ensureDirectory(folder)
     https.get(downloadLink, (response) => {
-      response.pipe(fs.createWriteStream(`${folder}/${filename}.mp3`))
+      response.pipe(fs.createWriteStream(`${folder}/${filename}`))
         .on('finish', () => {
           resolve();
         })