I have an ipod shuffle. Most of time, I play Xiangsheng on it.
It uses an usb cable to charge the battery and also connect with itunes to tranfer data.
The cable I have is not that sable. I have to put it in a particular position to make it conneted. So, I think there is a broken ponit fo one wire.
I decided to fix it by my soldering skill.
From the picture, you can see the part I cut and reconnected it.
I am alos using digital multimeter to double check the soldering and connection.
The pinout map is gotten from here. I put it below for future reference.
After everything done. I plugged into ipod shuffle, and usb into the PC. itunes find it automatically.