It's not possible, because DVI is video only, and HDMI is just DVI + Audio + a bunch of anti-piracy garbage that does nothing to prevent piracy but does jack up the cost of the cables and devices.
Your only real hope is a DVI to HDMI adapter that also has some kind of audio inputs. No idea if such a thing exists or not. It might in the form of an expensive adapter box instead of a simple adapter like a DVI to HDMI adapter.
Outside of that, I'd say you're pretty well screwed. If you use an HDMI input, the device is going to be expecting the audio signal to come from the HDMI port. So, unless the device in question allows you to configure an alternate input source for audio with an HDMI connection, I once again have to say, you're pretty well screwed.
Hi i recently purchased the Samsung 5 series (LN40A550) which has a PC inpute w/rca and 3 hdmi ports. i also purchased a DVI to HDMI cable to connect my PC to it. So i connected my pc to the TV along with an RCA cable but i got no sound. i do get sound though if use a vga (pc input) but no sound when i use the DVI to HDMI. i saw this article on a forum explaining how its possible to get sound through dvi. is this possible? can you help me?
Here is the thread (instructions are at the buttom)
I followed the instructions but i still get no sound.
Intel Core 2 Duo @ 2.33Ghz
MSI G33M motherboard with onboard sound (realtek)
BFG GeForce 8800GT Dual DVI + S-video