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List:       freebsd-hackers
Subject:    Re: Audio CDs Not Playing
From:       Benjamin Kaduk <kaduk () MIT ! EDU>
Date:       2014-07-31 14:04:09
Message-ID: alpine.GSO.1.10.1407310959100.21571 () multics ! mit ! edu
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On Wed, 30 Jul 2014, Dutch Ingraham wrote:

> Thanks for the info, Ben.  I had actually seen something on that issue in an 
> old (May 2008) daemonforums post while researching this problem. There, the 
> poster suggested using amarok or xmms - programs capable of "digital audio 
> extraction" ( I don't know what that is ) and in which it was implied that 
> cdcontrol was not capable of.
>
> xmms is deprecated and I don't want the hundreds of files that come with 
> amarok.  I suppose I could try something like audacious, but as noted, vlc 
> doesn't work either, so I'd prefer to not get into the cycle of downloading a 
> bunch of similar programs just to find out there was a simple setting I was 
> missing.
>
> Also, the current man page for <cdcontrol> and the handbook don't adress such 
> a restriction that I could find.
>
> Does "digital audio extraction" mean anything to you or is it helpful in ay 
> way?

I think I know what it means.  The easiest way to think about it is 
probably to realize that in order to play audio, the bits recorded on the 
CD have to make it to the digital-analog converter somehow.  If there's no 
direct line from the CD drive to the sound card (as we were discussing in 
the trimmed text), then that data has to be moved around in software. 
Some tool is needed to extract the audio data from the CD drive, and some 
tool is needed to send those off to the sound card; these tools can be the 
same, but need not be.

I tend to use cdparanoia for the first step, and the play(1) utility 
provided by audio/sox for the second step, leaving the bits around on my 
(sizable) hard drive for later use.  It sounds like xmms and amarok can 
combine the two steps into one, without leaving the bits on disk as an 
intermediate; I'm not sure offhand whether there are more lightweight 
utilities that can also do so.

-Ben
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