Use AppleTV to connect to your Time Capsule

Select the "Disks" tab at the top of the utility.
Ensure that "Enable file sharing" is ticked.
Choose from the "Secure Shared Disks" drop down list. FileBrowser TV supports all three modes.
If you choose the "With accounts" option, the username you configure here is the same one you will need to enter into FileBrowser TV's Username box.
For the other two options, you can leave FileBrowser TV's Username field blank and just enter the password.