If you use the DVI-to-Component method, I believe the audio RCA cables will still work. While yes, it depends on the TV, I use this setup currently without a problem. DVI doesn't carry audio, and so the TV manufacturer would *have* to provide an audio-input. Imagine if people bought DVD players, and couldn't get audio? It'd be a mess. DVI-to-Component + RCA cables for audio should do it.
If you want to try HDMI, however, I couldn't tell ya.