I just got my S2409W in and am now running my MBP to it via DVI and PS3 via HDMI. When switching to HDMI input, the PS3 video is fine, but no audio. I have my desktop Labtec 3 piece computer speakers hooked up to the audio out jack on the monitor. In the settings on the PS3 I have audio output via HDMI and on the monitor I put "Line Out Source" as "PC Audio"...is this correct?