Tune Nokia770 to use as LinuxMCE Orbiter

Many users of Nokia770 claim that the device work unstable as LinuxMCE Orbiter. The Orbiter crashes very often, especially on Video screen. So, I decided to make a brief research to make device more stable. Here is a few suggestions.
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Hexadecimal characters in GSD

Pluto allows to control A/V devices such as DVD players, amplifiers or TVs using Generic Serial Device (GSD). It supports Ruby to have possibility define commands for the devices. Generally, the device commands are plain text. For example, command ‘ON’ for DVD Denon looks like PWON and Ruby code will be like that:

<$"PWON\r"$>

However, some manufactures use hexadecimal characters in commands - 0xFE 0×03 0xC3 0×75. The Ruby code in this case will be following:

<$"\xFE\x03\xC3\x75"$>

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