Your project hasn't been shot with a poisoned arrow just yet...
For my TV, I have two possible setups. The first connection is VGA which I use when I connect an iBook. My TV comes with a VGA port to connect directly to a PC (or Mac) with a VGA port. Beside that is a mini-stereo port to connect to the headphone jack on my Mac. That way the audio and video are both connected and selected at the same time when I select "VGA" source from my TV's input source menu. This is a pure analog solution and most (but not all) HDTVs will offer this type of connection.
The second connection is made via HDMI which I use when I connect a modern PowerBook or Power Mac. My TV has three HDMI ports, and one of them also includes RCA audio (left & right analog stereo) input ports right beside it so that I can connect an HDMI source that doesn't carry audio on the digital connection but still get analog audio. So from my Mac, I connect a DVI->HDMI cable to the DVI port (or alternatively to an ADC->DVI adapter which can be surprisingly expensive for a pin-to-pin connector with no electronics inside) and I connect a mini-stereo to RCA cable to my headphones port. I connect the DVI->HDMI cable to the HDMI port on the TV, and the mini-stereo->RCA cable to the RCA audio ports on the TV. Then when I select the right input source (HDMI-3 in my case, but surely different for you), the TV automatically displays the video signal from said HDMI port but gets the audio from the associated, colocated RCA ports. Not all TVs have this feature, so your mileage may vary.
The DVI->HDMI (or ADC->DVI->HDMI) connection is definitely the easiest way to go if you can. And you can always consider using a separate external (as in not integrated into the TV) speaker system for your audio connection if necessary.
Peace,
Drew
For my TV, I have two possible setups. The first connection is VGA which I use when I connect an iBook. My TV comes with a VGA port to connect directly to a PC (or Mac) with a VGA port. Beside that is a mini-stereo port to connect to the headphone jack on my Mac. That way the audio and video are both connected and selected at the same time when I select "VGA" source from my TV's input source menu. This is a pure analog solution and most (but not all) HDTVs will offer this type of connection.
The second connection is made via HDMI which I use when I connect a modern PowerBook or Power Mac. My TV has three HDMI ports, and one of them also includes RCA audio (left & right analog stereo) input ports right beside it so that I can connect an HDMI source that doesn't carry audio on the digital connection but still get analog audio. So from my Mac, I connect a DVI->HDMI cable to the DVI port (or alternatively to an ADC->DVI adapter which can be surprisingly expensive for a pin-to-pin connector with no electronics inside) and I connect a mini-stereo to RCA cable to my headphones port. I connect the DVI->HDMI cable to the HDMI port on the TV, and the mini-stereo->RCA cable to the RCA audio ports on the TV. Then when I select the right input source (HDMI-3 in my case, but surely different for you), the TV automatically displays the video signal from said HDMI port but gets the audio from the associated, colocated RCA ports. Not all TVs have this feature, so your mileage may vary.
The DVI->HDMI (or ADC->DVI->HDMI) connection is definitely the easiest way to go if you can. And you can always consider using a separate external (as in not integrated into the TV) speaker system for your audio connection if necessary.
Peace,
Drew