From within your account
To change your password within your account when logged in, click My Library then select the options sub tab:
Scroll down to the Change your password subheading and enter your new details along with your previous password for confirmation:
If you do not know your password
In the instance that you have forgotten your password, navigate to the login page and click forgotten password? underneath the login prompt.
Upon entering the email address associated with your account, YUDU will email a link to your address by which you can reset your password.