I have a Philips HTS3051B/F7 and a Panasonic viera, is there any way to run the audio from my Chromecast (which is hooked up via HDMI) through the Philips Blu-Ray surround sound? There is a Digital audio in and HDMI out on the philips, and a Digital audio out as well as HDMI ports on the TV if that helps at all.
Don't you already have the Philips hooked to the TV with the digital audio connection?
That should work for the chromecast as well.
If you don't want to use the TV while you listen to music you can use an HDMI audio extractor to provide an audio connection that doesn't go through the TV.