Seperated out OTG, Device and Host mode demos into seperate folders for clarity. Adjusted makefiles so that the path to the LUFA library can be set in one place.

Demos/Device/AudioOutput/AudioOutput.txt

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+/** \file
+ *
+ *  This file contains special DoxyGen information for the generation of the main page and other special
+ *  documentation pages. It is not a project source file.
+ */
+ 
+/** \mainpage Audio Output Device Demo
+ *
+ *  \section SSec_Info USB Information:
+ *
+ *  The following table gives a rundown of the USB utilization of this demo.
+ *
+ *  <table>
+ *   <tr>
+ *    <td><b>USB Mode:</b></td>
+ *    <td>Device</td>
+ *   </tr>
+ *   <tr>
+ *    <td><b>USB Class:</b></td>
+ *    <td>Audio Class</td>
+ *   </tr>
+ *   <tr> 
+ *    <td><b>USB Subclass:</b></td>
+ *    <td>Standard Audio Device</td>
+ *   </tr>
+ *   <tr>
+ *    <td><b>Relevant Standards:</b></td>
+ *    <td>USBIF Audio Class Specification</td>
+ *    <td>USBIF Audio Class Terminal Types Specification</td>
+ *    <td>USBIF Audio Data Formats Specification</td>
+ *   </tr>
+ *   <tr>
+ *    <td><b>Usable Speeds:</b></td>
+ *    <td>Full Speed Mode</td>
+ *   </tr>
+ *  </table>
+ *
+ *  \section SSec_Description Project Description: 
+ *
+ *  Audio demonstration application. This gives a simple reference
+ *  application for implementing a USB Audio Output device using the
+ *  basic USB Audio drivers in all modern OSes (i.e. no special drivers
+ *  required).
+ *  
+ *  On startup the system will automatically enumerate and function
+ *  as a USB speaker. Incomming audio will output in 8-bit PWM onto
+ *  the timer output (timer 3 for the AT90USBXXX6/7 USB AVRs, timer 1 for
+ *  the AT90USBXXX2 controller AVRs) compare channel A for AUDIO_OUT_MONO
+ *  mode, on channels A and B for AUDIO_OUT_STEREO and on the board LEDs
+ *  for AUDIO_OUT_LEDS mode. Decouple audio outputs with a capacitor and
+ *  attach to a speaker to hear the audio.
+ *  
+ *  Under Windows, if a driver request dialogue pops up, select the option
+ *  to automatically install the appropriate drivers.
+ *
+ *  \section SSec_Options Project Options
+ *
+ *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
+ *
+ *  <table>
+ *   <tr>
+ *    <td><b>Define Name:</b></td>
+ *    <td><b>Location:</b></td>
+ *    <td><b>Description:</b></td>
+ *   </tr>
+ *   <tr>
+ *    <td>AUDIO_OUT_STEREO</td>
+ *    <td>Makefile CDEFS</td>
+ *    <td>When defined, this outputs the audio samples in stereo to the timer output pins of the microcontroller.</td>
+ *   </tr>
+ *   <tr>
+ *    <td>AUDIO_OUT_MONO</td>
+ *    <td>Makefile CDEFS</td>
+ *    <td>When defined, this outputs the audio samples in mono to the timer output pin of the microcontroller.</td>
+ *   </tr>
+ *   <tr>
+ *    <td>AUDIO_OUT_LEDS</td>
+ *    <td>Makefile CDEFS</td>
+ *    <td>When defined, this outputs the audio samples in stereo to the board LEDs.</td>
+ *   </tr>
+ *   <tr>
+ *    <td>AUDIO_OUT_PORTC</td>
+ *    <td>Makefile CDEFS</td>
+ *    <td>When defined, this outputs the audio samples in mono to port C of the microcontroller, for connection to an
+ *        external DAC.</td>
+ *   </tr>
+ *  </table>
+ */