Simultanious audio output from both mini Displayport and Audio Output port?

Hey guys,
I was wondering if someone who already has audio+video output through the mini displayport set up can be so kind and answer the following questions for me:
Can audio be output simultaniously from 3.5mm audio port as well as the mini displayport? That is, if I output both video and audio to my reciever through the 2010 iMac's mini Diplayport, can i use the standard audio output port to provide line input for a further set of (active) speakers (analog would be fine)?
In the case both outputs CANNOT work simultaniously, which one will work if i have both plugged in? If the mini displayport has higher rank (or priority or what whatever i should call the one that works when both outputs are plugged in), and the reciever it is plugged into is switched off, will audio automatically switch to the standard audio port? Same question goes if the standard audio output port has higher rank/priority?
Many thanks in advance!
Just in case you are wondering why the heck i would wanna do that, here's some background:
I am planning on setting up my new 27' iMac on a 'work' desk in my bedroom, where i can comfortably sit and work on the computer as well as use the beautiful screen as my bedroom TV. Since i also wanna use my mac for all my living room multimedia needs (movies, tv shows, music, etc), i plan on running a long (15m) audio+video HDMI cable all the way up to my reciever in my living room. Furthermore, i am also planning on running a USB cable to the living room (through something of this sort: http://www.coolgear.com/images/171632pro.jpg) plugged in to a usb hub mainly for mouse/keyboard availability in the living room, but also for other things such as external hard drives and so on. The problem is that, apart from having my audio play in the living room, i also want to provide line input to my reference monitors that will be located at the iMac desk and i obviously much prefer i get the line input directly from the mac rather than running a third cable from reciever back to the speakers.
Message was edited by: Leeon

Anyone?
Is that so few people are using the new mini displayport for audio, or did i ask the wrong way?
Help will be greatly appriciated as i need this info in order to plan my purchases!

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