Hi, I'm just new in Mac community. I bought my first new iMac last week. It's a 21.5-inch: 3.06GHz with NVIDIA GeForce 9400M graphics. I'm really fun of my new iMac My question is about the mini DisplayPort. I didn't find information about this question. Indeed, I bought a mini DisplayPort to DVI converter, and I linked my iMac to my Samsung TV using a DVI -> HDMI. So here is my connection iMac -> mini DisplayPort -> miniDisplayPort to DVI converter -> DVI -> HDMI input of my TV The video worked both using Mac OS and Windows 7 (i installed both OS because I need some windows softwares). But, I was especially surprised when I heard, from my TV the sound of Windows 7 (windows is installed as a dual boot and virtually). And there is no other link between my iMac and my TV other than the one described up. (the DVI -> HDMI). Moreover, when I'm using windows 7, I can choose my sound output, and a switched from : - iMac integrated speakers. - my TV speakers - my headphone (when it is connected to the mini Jack output of the iMac) Did anyone now if this functionality is possible from the mac OS X ? Thank your for your help.