You only need to make a few changes in your code to get it to do what you describe:
d = dir('*.wav'); % Select Only ‘.wav’ Files
str = {d.name};
[s,v] = listdlg('PromptString','Select a wav file:',...
'SelectionMode','single',...
'ListSize', [160 160],...
'Name', 'Choose Audio File..',...
'ListString',str)
if v
wav_name = str{s}; % File Name Of Selected File
wav_path = which(wav_name); % Path Of Selected File
else
fprintf(1, '\tNo file was selected.\n')
end
