A:
It is not clear where you are viewing the signals from the AppleTV and the TiVo units and from where the sound is being output currently.
If you are viewing the signals on the Computer screen and getting the sound from the Computer Speakers, then keep all the connections as they are currently. To get the sound from the Speakers of the Sony HTCT260 Sound Bar, connect the Audio/Headphones Output of the Computer to the Analog Audio Input jack of the Sony Sound Bar using an Analog Audio cord. The following type of cable can be used for this connection.
http://www.docs.sony.com/release/hyperlinks/png59126.png
The Sony Sound Bar also has a Digital Optical Audio Input and a Digital Co-axial Audio Input. You can also connect the AppleTV and the TiVo units to these Audio Input jacks directly according to the Audio Output jacks available on them.
If the above connections do not work, get back with the exact details on how all of the devices are currently connected. You can also contact our Technical Support Team to perform the connections further, as more details would be required to provide the exact setup. You can contact our Technical Support Team via chat, E-mail or Telephone at:
http://esupport.sony.com/US/p/select-system.pl?DIRECTOR=CONTACT