Philips Titan OS 8 channel audio playback issues

[geomusicmaker 4]

I've come up against an issue which I think is tied to the fact the app is running in a web wrapper. On films with 8 channel audio the app produces no sound. Regardless of audio codec, anything 8 channel is silent.

When I play the same films via DLNA using the TV's built in video player the audio works. I think whatever browser version the app is utilising doesn't have the appropriate codecs or capabilities to support 8 channel audio.

Would it be possible to add a "force downmix to 2.0/5.1" function to the app so this can be mitigated?