Go to the Raaga website. (See the link in the Resources section.) Once there, select "Telugu" from the list of languages.
Select "Register" from the top right corner of the screen to register your new account. This will lead you to the registration page. Enter all of the information and click "Register."
Open the activation email sent to the email address with which you registered and click on the activation URL link.
Find the Telegu songs you'd like to download and click the "Download" option next to each title.