Play/Stop Music in GUI with dropdown (separate buttons)

Hi there,

I'm trying to create a GUI that has a dropdown menu to select between different audio files that will then use an audioplayer object to play/stop these files using play/pause/stop pushbuttons. This worked using sound(), but I want to pause/stop. I know that audioplayer disappears if it's empty.

Here's the relevant GUI code:

fighandl=figure;   % create a figure and a "handle" to it
set(fighandl,'Name','QuickSIN');  % access handle, give fig a name
set(fighandl,'UserData','start');
set(fighandl, 'units', 'normalized', 'position', [0.15 0.15 0.7 0.7])


handles = guihandles(fighandl);

%dropdown menu (only working on getting 'Practice 1' working now)
handles.quickSIN = uicontrol(fighandl,'Style','popupmenu',...
    'Units','Normalized',...
    'Position',[0.05 0.65 0.2 0.3],...
    'FontSize',15,...
    'String',{'Practice 1','Practice 2','Practice 3','List 1','List 2','List 3','List 4','List 5','List 6'});


handles.push2=uicontrol('Style','pushbutton',...
    'String','4',...
    'FontSize',140,...
    'FontName','Marlett',...
    'FontWeight','bold',...
    'Units','Normalized',...
    'Position',[0.75 0.65 0.2 0.3],...
    'BackgroundColor',[0.62352941176, 0.3725490196, 0.62352941176],...
    'ForegroundColor','white',...
    'Callback',@play_Callback);

Here's the relevant parts of the callback function:

function play_Callback(play, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

handles = guidata(gcf);

persistent AP;

%note for this - create audioplayer object
if handles.quickSIN.Value == 1
    [y,Fs] = audioread('audiofile1.wma');
    AP = audioplayer(y,Fs);
    play(AP);
elseif handles.quickSIN.Value == 2 %and so on with other values
    [y,Fs] = audioread('audiofile2.wma');
    AP = audioplayer(y,Fs);
    play(AP);
end

I've tried to create an audioplayer function that the if statement calls, but that didn't work well for me either.

Maybe I'm thinking about this the wrong way?

Andrew