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-\subsection{Alpine CD changer emulator}
-This plugin emulates an Alpine CD changer. It allows to plug the Archos to a
-compatible head unit and control the playback from there, too. Currently
-implemented is track change, shuffle, seek, but no disk change. The plugin is a
-TSR, meaning it silently operates in the background once started. It will keep
-doing so until a new plugin is started.
-Alpine also did M-Bus as OEM for other brands (Honda, Acura, Volvo, BMW, etc.)
-Nowadays Alpine uses a different protocol, called Ai-Net, not supported by this
-plugin. (As well as all other protocols, please do not ask for such!)
-
-\subsubsection{The cable}
-Hookup to Archos works by connecting the headphone output including the remote
-pin (you need a 4-ring 3.5 mm plug for that) to the changer jack of the radio.
-M-Bus radios have a DIN-style circular jack with 8 pins (7 in a $\sim$ 270 degree
-circle, one in the center). A standard 5-pin DIN plug is OK for this, since we
-do not use the other (power) pins.
-
-As OEM, they shuffled the pins around a bit, better check first if it is not
-genuine Alpine. The bus pin is pulled high to 12 volts with a $\sim$ 2kOhm resistor,
-pulses driven low. Because it is open collector, this is not harmful to the
-Archos.\\
-ASCII art of the 4-pin headphone plug:
-\begin{verbatim}
-/ \
-\_/ left    -> Alpine pin 5
-|_| right   -> Alpine pin 4
-|_| remote  -> Alpine pin 1
-|_| ground  -> Alpine pin 2 + 3
-\end{verbatim}
-
-The remote pin can be programmed bidirectional, that is the reason this works.
-Very luckily the M-Bus uses a single wire communication and the two radios I
-tried are happy with the 3.3 Volt level the Archos can deliver. So the
-connection is a simple cable! For all protocols requiring more lines, an
-external controller would be necessary.
-
-\note{Archos FMs do not have the remote pin internally connected, but
-  one unit that was opened was internally prepared for it, a matter of closing a
-  bridge.}