Grip User's Guide
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# The "MP3" config tab

This tab allows to you configure Grip's MP3-encoding capabilities.

Figure 5. The "MP3" config tab

- `Encoder` — This allows you to select an encoder preset.

- `MP3 executable` — This specifies the full path to the executable program you wish to use for encoding.

- `MP3 command-line` — This is the command-line to be passed to the encoding program. The list of available switches can be found in the section called Configuration (%) switches.

- `MP3 file format` — This allows to you configure the filename and path that Grip encodes to. The list of available switches can be found in the section called Configuration (%) switches.

The second sub-tab contains addition options that you can specify to configure the encoding process.

Figure 6. Additional encoding options

- `Delete .wav after encoding` — If this option is checked, Grip will delete wav files after it has finished encoding them.

- `Insert info into SQL database` — If this option is checked, Grip will insert track meta-data into the DigitalDJ database (if it is installed).

- `Create .m3u files` — If this option is checked, Grip will create .m3u playlist listing the tracks on a CD when it is ripped.

- `Use relative paths in .m3u files` — If this option is checked, filename is .m3u files will be relative to the directory the .m3u file is in (otherwise, full paths will be used).

- `M3U file format` — This specifies the filename format to be used when writing .m3u files. The list of available switches can be found in the section called Configuration (%) switches.

- `Encoding bitrate` — This is the encoding bitrate (kilobits per second) to be used. This value is passed to the encoder using the '%b' switch.

- `Number of CPUs to use` — On SMP systems, Grip can encode using multiple processors. This value specifies the number of simultaneous encode processes to run. Grip needs to be restarted for a change to take effect.

- `MP3 'nice' value` — This allows you to set the 'nice' level to run encoding at. This changes the scheduling priorty of the process. The range goes from -20 (highest priority) to 19 (lowest).

- `MP3 filter command` — This allows you to specify a program (full path to executable, followed by the command-line) to run after a file has been encoded. The list of available switches can be found in the section called Configuration (%) switches.

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