diff --git a/app.py b/app.py
index ce266f8..c77cdab 100644
--- a/app.py
+++ b/app.py
@@ -138,6 +138,9 @@ class AnimeWwise(QMainWindow):
 		self.actionReset.triggered.connect(lambda: self.resetApp())
 		self.actionExit.triggered.connect(lambda: self.close())
 
+		self.actionExpand_all.triggered.connect(lambda: self.treeWidget.expandAll())
+		self.actionCollapse_all.triggered.connect(lambda: self.treeWidget.collapseAll())
+
 		self.actionExtract_Selected.triggered.connect(lambda: self.extractItems(False))
 		self.actionExtract_All.triggered.connect(lambda: self.extractItems(True))
 
@@ -196,6 +199,7 @@ class AnimeWwise(QMainWindow):
 		if data["action"] == "load":
 			self.fileStructure = data["content"]
 			self.updateTreeWidget(self.fileStructure)
+			self.loadFilesButton.setEnabled(True)
 			self.setExtractionState(True)
 			self.tabs.setCurrentIndex(1)
 			print("Done !")
@@ -224,6 +228,7 @@ class AnimeWwise(QMainWindow):
 			_map = None
 
 		self.resetTreeWidget()
+		self.loadFilesButton.setEnabled(False)
 
 		# why is all this required for threading damnit
 		self.backgroundThread = QThread()
@@ -262,6 +267,7 @@ class AnimeWwise(QMainWindow):
 	def resetTreeWidget(self):
 		self.treeWidget.clear()
 		self.fileStructure = {"folders": {}, "files": []}
+		self.audioInfoLabel.setText("Click on an audio file to get more infos !")
 		self.setExtractionState(False)
 
 	def updateTreeWidget(self, structure):
@@ -285,7 +291,21 @@ class AnimeWwise(QMainWindow):
 		self.treeWidget.itemClicked.connect(self.updateAudioPreview)
 
 	def updateAudioPreview(self, item, column):
-		print(item.text(0))
+		file_data = self.searchFiles(self.fileStructure, item.text(0))
+
+		if file_data == {"folders": {}, "files": []}:
+			self.audioInfoLabel.setText("Click on an audio file to get more infos !")
+			return
+
+		# flatten path
+		while file_data["files"] == []:
+			file_data = list(file_data["folders"].values())[0]
+
+		meta = file_data["files"][0][1]["metadata"]
+
+		# show meta
+		text = f'Infos for {item.text(0)} => Channels : {meta["channels"]} | Sample rate : {meta["sampleRate"]} Hz | Bitrate : {meta["avgBitrate"]} kbps | Codec : {meta["codecDisplay"]} | Layout type : {meta["layoutType"]}'
+		self.audioInfoLabel.setText(text)
 
 	def addItems(self, parent, element):
 		for folder_name in sorted(element.get("folders", {}).keys()):
@@ -301,7 +321,7 @@ class AnimeWwise(QMainWindow):
 
 		for file in sorted(element.get("files", [])):
 			file_meta = file[1]
-			file_item = QTreeWidgetItem([file[0], f'{round(file_meta["metadata"]["duration"], 2)} seconds', file_meta["source"], str(file_meta["size"]), str(hex(file_meta["offset"]))])
+			file_item = QTreeWidgetItem([file[0], f'{round(file_meta["metadata"]["duration"], 1)} seconds', file_meta["source"], str(file_meta["size"]), str(hex(file_meta["offset"]))])
 			file_item.setFlags(file_item.flags() | Qt.ItemIsUserCheckable)
 			file_item.setCheckState(0, Qt.Unchecked)
 			if parent is None:
@@ -313,10 +333,6 @@ class AnimeWwise(QMainWindow):
 	def extractItems(self, _all):
 		self.setFolder(folder="output")
 
-		if self.folders["output"] == "":
-			QMessageBox.warning(None, "Warning", "Missing output folder !", QMessageBox.Ok)
-			return
-
 		checked_items = []
 	
 		# todo: use file structure instead of tree view
@@ -366,6 +382,7 @@ class AnimeWwise(QMainWindow):
 		self.resetTreeWidget()
 		self.extract.reset()
 		self.setExtractionState(False)
+		self.tabs.setCurrentIndex(0)
 		print("Reset !")
 
 	def _appendText(self, text):
diff --git a/gui.ui b/gui.ui
index 6e641bb..de16afa 100644
--- a/gui.ui
+++ b/gui.ui
@@ -241,9 +241,9 @@
      <widget class="QWidget" name="horizontalLayoutWidget">
       <property name="geometry">
        <rect>
-        <x>0</x>
+        <x>10</x>
         <y>580</y>
-        <width>1081</width>
+        <width>1061</width>
         <height>31</height>
        </rect>
       </property>
@@ -251,34 +251,7 @@
        <item>
         <widget class="QLabel" name="audioInfoLabel">
          <property name="text">
-          <string>sample_long_name.wem | Duration : 00:00 | Stereo (48000Hz)</string>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <widget class="QLabel" name="audioPlayPadding">
-         <property name="text">
-          <string/>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <widget class="QPushButton" name="playAudioBtn">
-         <property name="enabled">
-          <bool>false</bool>
-         </property>
-         <property name="text">
-          <string>Play</string>
-         </property>
-        </widget>
-       </item>
-       <item>
-        <widget class="QPushButton" name="stopAudioBtn">
-         <property name="enabled">
-          <bool>false</bool>
-         </property>
-         <property name="text">
-          <string>Stop</string>
+          <string>Click on an audio file to get more infos !</string>
          </property>
         </widget>
        </item>
@@ -366,7 +339,7 @@
      <x>0</x>
      <y>0</y>
      <width>1100</width>
-     <height>26</height>
+     <height>21</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
diff --git a/wwise.py b/wwise.py
index 056388e..93de3b7 100644
--- a/wwise.py
+++ b/wwise.py
@@ -60,6 +60,7 @@ def parse_wwise(reader):
 		"channelLayout": None,
 		"channelType": None,
 		"codec": None,
+		"codecDisplay": None,
 		"layoutType": None,
 		"interleaveBlockSize": None,
 		"numSamples": None,
@@ -109,10 +110,21 @@ def parse_wwise(reader):
 	codec = codecs[metadata["format"]]
 
 	if codec not in ["PTADPCM", "VORBIS"]: # Platinum "PtADPCM" custom ADPCM for Wwise
-		raise Exception(f"unhandled codec -> {codec}")
+		print(f"unhandled codec -> {codec}")
 
 	metadata["codec"] = codec
 
+	# codec name
+	codecs_names = {
+		"PTADPCM": "Platinum 4-bit ADPCM",
+		"VORBIS": "Custom Vorbis"
+	}
+
+	if codec in codecs_names:
+		metadata["codecDisplay"] = codecs_names[codec]
+	else:
+		metadata["codecDisplay"] = codec
+
 	# parse more infos
 	if metadata["codec"] == "PTADPCM":
 		metadata["layoutType"] = "interleave"
@@ -124,4 +136,3 @@ def parse_wwise(reader):
 	return metadata
 
 	# TODO: parse VORBIS
-	# TODO: rewrite codec ?