[linux-audio-user] Copy-Protection of Audio-CDs produced by myself

[Dave Phillips]

Greetings:

  One of my students came to his lesson without his tunes CD this week. 
It's a home-burned disc, he put it in his in-car player (an older Sony 
6-disc unit) and the player refused to recognize it. Worse, the player 
refused to disgorge the disc. So, does anyone know how to get a CD out 
of a player mounted in the dashboard of a car ?

  More relevant question: What causes such lock-ups ? I've experienced 
players that refused to recognize some home-burned discs but I've never 
had a player lock up while attempting to play one. I've also heard that 
the reflective surface of some discs will send some players into fits.

  Do contemporary units look for a copy-protection bit ? Can the lack of 
copy-protection cause a lock-up ? How will DRM-enabled players respond 
to a home-burned disc ?

  Btw, someone should have tried to answer the original poster's 
inquiry. AFAICT we've just responded with our opinions regarding the 
vile nature of copy protection and the drawbacks of current copyright 
law. In case anyone's interested in minimally copy-protecting a CD here 
are some relevant entries from 'man cdrecord' :

     -copy  If this flag is present, all TOC entries  for  subsequent  audio
              tracks of the resulting CD will indicate that the audio 
data has
              permission to be copied  without  limit.   This  option  
has  no
              effect on data tracks.

     -nocopy
              If  this  flag  is present, all TOC entries for subsequent 
audio
              tracks of the resulting CD will indicate that the audio 
data has
              permission to be copied only once for personal use - this 
is the
              default.

     -scms  If this flag is present, all TOC entries  for  subsequent  audio
              tracks of the resulting CD will indicate that the audio 
data has
              no permission to be copied anymore.

Best,

dp



Daniel James wrote:

>>mine is a very old player and surely not one with a PC drive in
>>it
>>    
>>
>
>I think the higher quality players are more sensitive to corruption, 
>and are designed to reject 'faulty' discs rather than let them play. 
>I believe some models have error meters which light up whenever a 
>'protected' disc is played.
>
>I've often heard very expensive CD players at radio stations screw up 
>on air, while the cheap players don't care about errors and will play 
>almost anything!
>
>Cheers
>
>Daniel
>
>
>  
>