I have an early 2009 17 in MBP and recently, I wanted to connect my MBP to my TV so i can watch some HD MKV videos i have. I purchased a Moshi Mini DP to HDMI adapter and I realize that audio isn't supported by my MBP, so I tried to use a set of audio cables I had from my desk stereo speakers (yellow and white audio cables). I have video, but the audio just isn't going through and I tried most of what was suggested online. My TV is a new-ish Samsung (from a year or 2 ago), so I don't see why the audio is not working. I tried to change the settings on both the TV and my MBP, and it says the audio is going through the headphone jack, but the TV isn't doing anything. Any help?