private JComponent buildAudioSetupPanel() {
String colSpec = FormLayoutUtil.getColSpec("left:pref, 3dlu, pref:grow", orientation);
FormLayout layout = new FormLayout(colSpec, "$lgap, pref, 3dlu, 5*(pref, 3dlu), pref, 12dlu, 3*(pref, 3dlu), pref:grow");
PanelBuilder builder = new PanelBuilder(layout);
builder.border(Borders.DLU4);
CellConstraints cc = new CellConstraints();
builder.addLabel(Messages.getString("TrTab2.50"), FormLayoutUtil.flip(cc.xy(1, 2), colSpec, orientation));
channels = new JComboBox(new Object[]{Messages.getString("TrTab2.55"), Messages.getString("TrTab2.56") /*, "8 channels 7.1" */}); // 7.1 not supported by Mplayer :\