diff --git a/badger-am.js b/badger-am.js
index e94a93e..d7cd7a7 100755
--- a/badger-am.js
+++ b/badger-am.js
@@ -71,37 +71,9 @@ function convert(input, output, options) {
 
 // sort files
 function sort(input, output, options) {
-    async.waterfall([
-        function (asyncCallback) {
-            recursive(input, [ignoreFilter], asyncCallback);
-        },
-        function (files, asyncCallback) {
-            console.log(files.length + ' \'' + options.format + '\' files found');
-            // display progressbar
-            const bar = util.createProgressBar(files.length);
-            // handle each file
-            async.eachLimit(files, commander.concurrency, function (file, eachCallback) {
-                processFileSort(output, file, options, function (err) {
-                    bar.tick();
-                    if (err) {
-                        return eachCallback(err);
-                    }
-                    eachCallback();
-                });
-            }, function (err) {
-                if (err) {
-                    return asyncCallback(err);
-                }
-                asyncCallback();
-            });
-        }
-    ], function (err, result) {
-        util.exit(err, start);
-    });
-
-    function ignoreFilter(file, stats) {
-        return !stats.isDirectory() && path.extname(file).indexOf(options.format) == -1;
-    }
+    util.batchSort(getConfig(input, output, options, commander), function (err) {
+        cli.exit(err);
+    })
 }
 
 // move file to location defined by its metadata
diff --git a/lib/util.js b/lib/util.js
index b8cb23e..edf4316 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -4,6 +4,66 @@ const async = require('async');
 const fse = require('fs-extra');
 const recursive = require('recursive-readdir');
 const progress = require('progress');
+const cli = require('./cli');
+const audio = require('./audio');
+
+// move all files from input to output directory
+function batchSort(config, callback) {
+    async.waterfall([
+        // get files
+        function (waterfallCallback) {
+            readDirRecursive(config.input, config.format, waterfallCallback);
+        },
+        // display info, prompt user and create progressbar
+        function (files, waterfallCallback) {
+            cli.askForConfirmation(files.length + ' files found.\nstart sorting now?', ['yes', 'y'], function (err) {
+                if (err) {
+                    return waterfallCallback(err);
+                }
+                waterfallCallback(null, files, cli.createProgressBar(files.length));
+            });
+        },
+        // process each file
+        function (files, bar, waterfallCallback) {
+            async.eachLimit(files, config.concurrency, function (file, eachCallback) {
+                moveFile(file, config, function (err) {
+                    bar.tick();
+                    if (err) {
+                        return eachCallback(err);
+                    }
+                    eachCallback();
+                })
+            }, waterfallCallback);
+        }
+    ], callback);
+}
+
+// create target directory and move the file
+function moveFile(source, config, callback) {
+    async.waterfall([
+        // get metadata
+        function (waterfallCallback) {
+            audio.extractMetadata(source, waterfallCallback);
+        },
+        // create path from metadata
+        function (metadata, waterfallCallback) {
+            getPathByMetadata(source, config.output, metadata, waterfallCallback);
+        },
+        // create target directory
+        function (target, waterfallCallback) {
+            fse.mkdirs(path.dirname(target), function (err) {
+                if (err) {
+                    return waterfallCallback(err);
+                }
+                waterfallCallback(null, target);
+            });
+        },
+        // move file
+        function (target, waterfallCallback) {
+            fse.move(source, target, waterfallCallback);
+        }
+    ], callback);
+}
 
 // create path for target file
 function getPathByMetadata(source, output, metadata, callback) {
@@ -50,23 +110,6 @@ function getPathByMetadata(source, output, metadata, callback) {
     callback(null, path.join(filePath, fileName));
 }
 
-// create target directory and move the file
-function moveFile(source, target, callback) {
-    async.series([
-        function (asyncCallback) {
-            fse.mkdirs(path.dirname(target), asyncCallback);
-        },
-        function (asyncCallback) {
-            fse.move(source, target, asyncCallback);
-        }
-    ], function (err, results) {
-        if (err) {
-            return callback(err);
-        }
-        callback();
-    });
-}
-
 // fill a string beginning from the front
 function frontFill(string, fill, length) {
     while (string.toString().length < length) {
@@ -87,7 +130,8 @@ function readDirRecursive(where, extension, callback) {
 }
 
 // api
-exports.getPathByMetadata = getPathByMetadata;
+exports.batchSort = batchSort;
 exports.moveFile = moveFile;
+exports.getPathByMetadata = getPathByMetadata;
 exports.frontFill = frontFill;
 exports.readDirRecursive = readDirRecursive;
\ No newline at end of file
diff --git a/package.json b/package.json
index 0e96770..954129d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "badger-am",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "license": "MIT",
   "description": "audio manager",
   "author": "Daniel Sommer <daniel.sommer@velvettear.de>",