--- a/src/pyams_media/zmi/audio.py	Tue May 29 09:49:04 2018 +0200
+++ b/src/pyams_media/zmi/audio.py	Mon Jun 11 15:28:09 2018 +0200
@@ -14,30 +14,20 @@
 
 
 # import standard library
-from decimal import Decimal
 
 # import interfaces
-from pyams_file.interfaces import IVideo, IThumbnail, IAudio
-from pyams_form.interfaces.form import IWidgetsPrefixViewletsManager, IFormHelp
-from pyams_skin.interfaces.viewlet import IContextActions
-from pyams_utils.interfaces import MANAGE_PERMISSION, VIEW_PERMISSION
+from pyams_file.interfaces import IAudio
+from pyams_form.interfaces.form import IWidgetsPrefixViewletsManager
+from pyams_utils.interfaces import VIEW_PERMISSION
 from pyams_zmi.layer import IAdminLayer
-from z3c.form.interfaces import HIDDEN_MODE
 
 # import packages
-from pyams_form.form import AJAXAddForm
-from pyams_form.help import FormHelp
-from pyams_form.schema import CloseButton
 from pyams_pagelet.pagelet import pagelet_config
 from pyams_skin.layer import IPyAMSLayer
-from pyams_skin.viewlet.toolbar import ToolbarActionItem
 from pyams_template.template import template_config
-from pyams_utils.adapter import adapter_config
-from pyams_utils.schema import DottedDecimalField
 from pyams_viewlet.viewlet import viewlet_config, Viewlet
-from pyams_zmi.form import AdminDialogAddForm, AdminDialogDisplayForm
-from pyramid.view import view_config
-from z3c.form import field, button
+from pyams_zmi.form import AdminDialogDisplayForm
+from z3c.form import field
 from zope.interface import Interface
 
 from pyams_media import _