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Debian Packages:
grip
Grip is able to obtain information about your CD from the
Free CD Database automatically over the web. This information
includes the tack details and is displayed under the Tracks tab (see
Figure 7.2). You may need to ensure the
configuration for the Free CD Database server is set up--see
Figure 7.3 for an example configuration. If
the CD information is already available locally (because
grip or some other CD utility has previously updated the
database of disks in /.cddb) then it will be displayed.
Figure 7.3:
Here grip is configured to query the Free CD database
server to find information about the CD. If this query fails
then the non-free database is searched. If the CD information is
found in the non-free database and not in the free database you
will given the opportunity to update the free database with the
information.
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The process of reading the WAV tracks from an audio CD is called
ripping. A popular GNU/Linux ripper is
cdparanoia
and Grip includes
cdparanoia so you do not need to install the package
separately. Also supported are the separately installed rippers
cdparanoia
and cdda2wav. See
Figure 7.4 for an example configuration.
The process of converting the WAV encoding to ogg is called
encoding and again there are many alternatives. For mp3
encoding supported Debian packages include lame,
bladeenc, l3enc, xingmp3enc,
mp3encode, and gogo. The lame
encoder is a good choice. Once again, see Figure 7.4
for an example configuration.
Figure 7.4:
Configuring grip is straightforward. This
setup uses cdparanoia
to read the Audio CD data and
lame
to convert the resulting WAV files to mp3. Note
also that a track number (%t) has been added to the file name.
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Grip will rip and encode a CD in separate processes allowing
the encoding to happen while the next track is being ripped.
Now we are ready to rip and encode an audio CD. Insert your CD into
the CD-ROM drive.
The Tracks tab should list the available tracks. If what you get is a
list like that in Figure 7.5 then for some reason
the information is not available (probably because you are not
connected to the internet or the CD is not know to the databases). In
this case, enter the information yourself. This is useful because the
information is then recorded in the mp3 file as the
ID3 tag. This is used by various mp3 players
to display track information. To enter the information yourself click
on the Toggle disk editor button (the pencil icon along the
bottom row of buttons). This will open up an area for you to enter
the relevant information (see Figure 7.5). Once you
have enetered the information be sure to share it by clicking on the
Submit disc info button with the letter icon.
Figure 7.5:
Grip is unable to find the information for this disk.
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Next select the tracks you wish to encode. Click in the Rip column
heading to select all tracks. Go to the Rip tab and click on the
Rip+Encode button. Sit back and wait. This process takes quite a
while and is quite resource intensive (so your games may be slow while
you wait). The progress bars on the Rip tab show how things are going.
For each CD a playlist is created in /mp3 and for each track
two files are created, usually somehwhere in /mp3 as well,
depending on the settings in Figure 7.4. You set
the location of the playlist in the Config tab under MP3 Options
(where you can also tell grip to automatically delete the
temporary WAV files). The playlist is identified as an M3U file. The
example configuration places both the temporary WAV file and the mp3
file in /mp3/%a/%d/%t.%n.wav and
/mp3/%a/%d/%t.%n.mp3 respectively. That is, a folder is
created having the same name as the artist (%a), and a
sub-folder of this having the disc name (%d). Into this
sub-folder all of the tracks are stored with names consisting of track
number (%t) and track name (%n). So, for
example, you might have:
~/mp3/pink_floyd/a_saucerful_of_secrets/04.corporal_clegg.mp3
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This scheme works quite nicely but of course use whatever scheme suits
you.
If there are problems accessing the CD make sure /dev/sg0 has
the correct permissions:
# ls -l /dev/sg0
crw------- 1 root root 21, 0 Mar 15 2002 sg0
# chgrp cdrom /dev/sg0
changed group of `/dev/sg0' to cdrom
# chmod g+rw /dev/sg0
mode of `/dev/sg0' changed to 0660 (rw-rw----)
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