Once you receive the Baby Audio plugin activation key (serial) from SudeepAudio.com, follow these steps:

Step 1:
Download the trial version of the purchased Baby Audio software from here >

Step 2:
Open the plugin in your DAW.

Step 3:
Activate the plugin by entering your serial key (emailed with your purchase) into the text window in the trial screen.
Please note that you need an Internet connection to activate your license.