processing whole .wav files at a time

I have this energy calculation files for a single .wav file .I have loaded these whole files in matlab ,but its not giving energy of all the wav files .

Please suggest where i m wrong .

clc;

close all; clear all;

myFolder = 'C:\Users\............\anger';

filePattern = fullfile(myFolder, '*.wav');

theFiles = dir(filePattern);

for k = 1 : length(theFiles)

anger= theFiles(k).name;

fullFileName = fullfile(myFolder, anger);

% read sound

[data, fs] = wavread('k');

% normalize data

data = data / abs(max(data));

% do framing

f_d = 0.025;

frames = framing(data, fs, f_d);% it is like 0% overlap with rectangular window

% calculate frames energy

[r,c] = size(frames);

ste = 0;

for i = 1 : r

ste(i) = sum(frames(i,:).^2);

end

ste = ste./max(ste); %normalize the data

f_size = round(f_d * fs);

ste_wave = 0;

for j = 1 : length(ste)

l = length(ste_wave);

ste_wave(l : l + f_size) = ste(j);

end

% plot the STE with Signal

t = [0 : 1/fs : length(data)/fs]; % time in sec

t = t(1:end - 1);

t1 = [0 : 1/fs : length(ste_wave)/fs];

t1 = t1(1:end - 1);

plot(t,data'); hold on;

plot(t1,ste_wave,'r','LineWidth',2);

legend('Speech Signal','Short Term Energy (Frame Energy)');

% Silence Removal

id = find(ste >= 0.01);

fr_ws = frames(id,:); % frames without silence

% reconstruct signal

data_r = reshape(fr_ws',1,[]);

figure;

plot(data);hold on;

plot(data_r,'g'); title('speech without silence');

end