Macbook to Hdtv scaling problems

Hi there!
I have a macbook 2008 alumiinium 2.4ghz model. I am trying to connect it to my HDTV. I bought a miniDP to HDMI and connected to my tv and it works great. The picture fits the tv perfectly, however even though it fits the screen I was wanting to use the bigger screen to work on Logic Pro as a 13in screen is a bit of a pain at times. The problem is that so far my macbook screen it being stretched to fit the 42in tv screen so I don't actually get any extra space as my screen just looks bigger!
Any suggestions on setting to fix this? I have an LG television if that helps. I cant for the life of my figure how to get it to work. The picture on my tv is really sharp and great but its just scaling up everything on my mac when what I really want is to be able to use that extra screen real estate for my logic pro projects!!!
Cheers in advance!
Tom

There is a chance that your MDP to HDMI adapter is not working properly with audio. I had that problem with one that I had bought. I tried a newer one and the sound came through with no problems.
The only thing I would suggest (before buying a new adapter) is, try a different HDMI cable... if you have one. That way you can rule out that as being the problem.

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32 mDNSResponder root 0.00 1.12 MB 28.38 MB
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39 memberd root 0.00 652.00 KB 27.64 MB
40 securityd root 0.00 2.20 MB 28.68 MB
42 notifyd root 0.00 460.00 KB 27.19 MB
43 distnoted root 0.00 816.00 KB 27.01 MB
44 DirectoryService root 0.00 2.46 MB 29.46 MB
45 blued root 0.00 2.12 MB 37.17 MB
50 coreservicesd root 0.00 8.96 MB 39.99 MB
54 update root 0.20 220.00 KB 26.59 MB
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null

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