why does the sound on my computer keep cutting out

4:35

3:31

1:53

3:10

3:01

2:58

3:23

10:14

3:03

2:39

3:13

1:09

2:52

6:31

12:08

3:42

1:48

2:15

8:29

2:28

15:35

3:29

3:37

1:11

10:17

4:32

2:32

2:13

10:27

15:41

2:16

2:50

2:56

00:58

2:42

1:45

4:26

1:37

1:39

3:16

3:49

4:42

1:08

5:48

13:47

2:54

4:17

4:47

12:17

1:50

2:39

2:15

2:39

2:58

3:16

2:52

2:50

1:29

4:37

4:55