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+<article lang="&language;" id="audiocd">
+<title>audiocd</title>
+<articleinfo>
+<authorgroup>
+<author>&Rik.Hemsley; &Rik.Hemsley.mail;</author>
+<author><personname><firstname>Benjamin</firstname><surname>Meyer</surname></personname></author>
+<!-- TRANS:ROLES_OF_TRANSLATORS -->
+</authorgroup>
+
+<date>2004-09-16</date>
+<releaseinfo>2.30.00</releaseinfo>
+
+</articleinfo>
+
+<para>Allows treating audio <acronym>CD</acronym>s like a
+<quote>real</quote> filesystem, where tracks are represented as files
+and, when copied from the folder, are digitally extracted from the
+<acronym>CD</acronym>. This ensures a perfect copy of the audio
+data.</para>
+
+<para>To see how this slave works, insert an audio <acronym>CD</acronym>
+in your &CD-ROM; drive and type <userinput>audiocd:/</userinput> into
+&konqueror;. Within a few seconds you should see a list of tracks and
+some folders.</para>
+
+<para>Audio <acronym>CD</acronym>s don't really have folders, but
+the audiocd slave provides them as a convenience. If you look inside
+these folders you will see that they all contain the same number of
+tracks. If you are connected to the Internet, some folders will have
+the actual track titles shown as the filenames.</para>
+
+<para>The reason that these separate folders exist are so that you
+can choose in which format you would like to listen to (or copy) the
+tracks on the <acronym>CD</acronym>.</para>
+
+<para>If you drag a track from the <filename class="directory">Ogg
+Vorbis</filename> folder and drop it on another &konqueror; window
+open at your home folder, you should see a progress window showing
+you that the track is being extracted from the <acronym>CD</acronym> and
+saved to a file. Note that Ogg Vorbis is a compressed format, so the
+file in your home folder will appear a great deal smaller than it
+would have been if you had copied the raw data.</para>
+
+<para>The mechanism behind this is quite simple. When the audiocd slave
+is asked to retrieve a track from the <filename class="directory">Ogg
+Vorbis</filename> folder, it starts extracting the digital audio data
+from the <acronym>CD</acronym>. As it sends the data over to the file in
+your home folder, it simultaneously encodes it in Ogg Vorbis format
+(<acronym>CD</acronym> audio is in an uncompressed format to start
+with).</para>
+
+<para>You could also try dragging a file ending in <literal
+role="extension">.wav</literal> and dropping it on the &kde; Media
+Player, &noatun;. In this case, the procedure that happens behind the
+scenes is similar, except that instead of encoding the audio data in Ogg
+Vorbis format, it is put through a very simple conversion, from raw
+binary data (which the <literal role="extension">.cda</literal> files in
+the toplevel folder represent) to <quote>RIFF WAV</quote> format, a
+non-compressed format that most media players understand.</para>
+
+<para>&noatun; should quite happily play the <literal
+role="extension">.wav</literal> file, but if it has trouble, you may
+consider using the <option>paranoia_level</option> option, explained
+below.</para>
+
+<variablelist>
+<title>Options</title>
+
+<varlistentry>
+<term><option>device</option></term>
+<listitem>
+<para>Set the path to the audio <acronym>CD</acronym> device, &eg;
+<userinput>audiocd:/<option>?device</option>=<parameter>/dev/sdc</parameter></userinput>.
+Normally, the slave will try to find a <acronym>CD</acronym> drive with
+an audio <acronym>CD</acronym> inserted, but if it fails or you have
+more than one <acronym>CD</acronym> drive, you may want to try this
+option. Note that the configuration dialog allows you to set a default
+value for this option.</para>
+</listitem>
+</varlistentry>
+
+<varlistentry>
+<term><option>fileNameTemplate</option></term>
+<listitem>
+<para>Set the file name template, &eg;
+<userinput>audiocd:/<option>?fileNameTemplate</option>=<parameter>Track %{number}</parameter></userinput>. Note that the configuration dialog allows you to set a default value for this option. A warning that if you set it to an empty string no files will show up.</para>
+</listitem>
+</varlistentry>
+
+<varlistentry>
+<term><option>albumNameTemplate</option></term>
+<listitem>
+<para>Set the album name template, &eg;
+<userinput>audiocd:/<option>?albumNameTemplate</option>=<parameter>%{albumartist} %{albumtitle}</parameter></userinput>. Note that the configuration dialog allows you to set a default value for this option.</para>
+</listitem>
+</varlistentry>
+
+<varlistentry>
+<term><option>niceLevel</option></term>
+<listitem>
+<para>Sets the process nice level for encoders, &eg;
+<userinput>audiocd:/<option>?albumNameTemplate</option>=<parameter>niceLevel=10</parameter></userinput>. Note that the configuration dialog allows you to set a default value for this option.</para>
+</listitem>
+</varlistentry>
+
+<varlistentry>
+<term><option>paranoia_level</option></term>
+<listitem>
+<para>Set the amount of error detection and correction used when
+extracting data.</para>
+
+<variablelist>
+<varlistentry>
+<term>Level 0</term>
+<listitem>
+<para>No detection or correction. Only useful if you have a perfect
+<acronym>CD</acronym> drive (unlikely).</para>
+</listitem>
+</varlistentry>
+
+<varlistentry>
+<term>Level 1</term>
+<listitem>
+<para>Enable basic error checking and correction.</para>
+</listitem>
+</varlistentry>
+
+<varlistentry>
+<term>Level 2</term>
+<listitem>
+<para>Default. Specifies that only a perfect extraction will be
+accepted.</para>
+</listitem>
+</varlistentry>
+</variablelist>
+
+<para>Note that there is a disadvantage to level 2. Extraction can be
+very slow, so real-time digital playback may not work properly. If you
+have a good quality <acronym>CD</acronym> drive (note that more
+expensive does not necessarily mean better quality) then you probably
+won't experience very slow extraction, but a poor drive may take days
+(!) to extract the audio from one <acronym>CD</acronym>.</para>
+</listitem>
+</varlistentry>
+
+<varlistentry>
+<term><option>cddbChoice</option></term>
+<listitem>
+
+<para>Specify which Internet <acronym>CD</acronym> Database entry to use. Audio
+<acronym>CD</acronym>s don't have track names, but the Internet
+<acronym>CD</acronym> Database is a clever system which uses a special
+unique identifier generated from the number and length of tracks on each
+<acronym>CD</acronym> to cross-reference a track listing. Track listings
+are contributed by the Internet community and made available to
+all. Occasionally there will be multiple entries. You can specify which one to use.</para>
+
+<para>You can submit your own track listings using &kscd;, the &kde;
+<acronym>CD</acronym> player.</para>
+
+<para>By default audiocd tries to pick the best one.</para>
+</listitem>
+</varlistentry>
+</variablelist>
+
+<variablelist>
+<title>Examples</title>
+<varlistentry>
+<term><userinput>audiocd:/?device=/dev/scd0&amp;paranoia_level=0&amp;cddbChoice=0</userinput></term>
+<listitem>
+<para>Gives a listing of the tracks on the audio <acronym>CD</acronym>
+inserted in <filename class="devicefile">/dev/scd0</filename>, which on
+&Linux; specifies the first <acronym>SCSI</acronym> &CD-ROM; device. If
+you copy tracks from the <acronym>CD</acronym>, digital extraction will
+be performed without error correction or detection. The
+<acronym>CDDB</acronym> Database entry 0 will be used.</para>
+</listitem>
+</varlistentry>
+</variablelist>
+
+<qandaset>
+<title>Frequently Asked Question</title>
+<qandaentry>
+<question>
+<para>I get <errorname>The file or folder / does not
+exist</errorname>. How do I fix that? I have an audio
+<acronym>CD</acronym> in my drive!</para>
+</question>
+
+<answer>
+<para>Try running <userinput><command>cdparanoia</command>
+<option>-vsQ</option></userinput> as yourself (not <systemitem
+class="username">root</systemitem>). Do you see a track list? If not,
+make sure you have permission to access the <acronym>CD</acronym>
+device. If you're using <acronym>SCSI</acronym> emulation (possible if
+you have an <acronym>IDE</acronym> <acronym>CD</acronym> writer) then
+make sure you check that you have read and write permissions on the
+generic <acronym>SCSI</acronym> device, which is probably <filename
+class="devicefile">/dev/sg0</filename>, <filename
+class="devicefile">/dev/sg1</filename>, &etc;. If it still doesn't work,
+try typing <userinput>audiocd:/?device=/dev/sg0</userinput> (or similar)
+to tell kio_audiocd which device your &CD-ROM; is.</para>
+</answer>
+</qandaentry>
+</qandaset>
+
+
+</article>