Tech blog by kipusoep
I tried updating the firmware of my Harman/Kardon AVR255 with Windows 7 Ultimate x64, but it always failed at the video subsystem part with the message: “AVR didn’t respond properly. Video subsystem upgrade failed.”
Then I tried using Windows XP Mode for Windows 7 and it worked! 
I recently bought a new A/V Receiver, which supports digital audio via two connection types: optical and digital. So I connected my laptop via spdiff – optical to the receiver and the receiver was receiving Dolby Digital perfectly.
There was only one problem, I wanted to send stereo sound via Winamp in 5.1 signal too. After looking around the web for some plug-in, I found ATSurround. This plug-in can upmix stereo to 5.1 / AC3.
Just download it from free-codecs.com
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