Just wanted to post this to help any other dell laptop owners.
What I found was that by default the sound isn't enabled to the hdmi port. And that you have to manually turn it on AMD has a article about it.
Basicly its under hardware sound device control once
I followed that it works like a charm...
Hope this helps another Dell Studio owner
This article provides a guide to help get the HDTV audio operating effectively by troubleshooting various issues that can prevent the signal from working when using a direct connection to the computer’s graphics card through an HDMI cable
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