@Hiroki
SoundJuicer is the default CD ripper that comes with Ubuntu.
It does a reasonable job.
RubyRipper is better though. It's Linux's next best thing to EAC.
There's a tutorial here how to install it:-
http://ubuntuforums.org/showthread.p...ght=RubyRipper

As my screenshot shows, you can rip as flac, mp3 etc and can set the options of the encoders. It's also possible to use other encoders such as NeroAac etc.
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