Thanks for the answers.
I tried to make a CloneCD (version 4) image, and created a 18 Kbytes file, these are just the kilobytes proportional to 1:28 timing that you see on the display of a Hi-Fi CD player or discman.
If I take a look to the structure of the CD (using CDRWin 4.0), I see 8 tracks, first of music and the other unknown. And, of course, there is no posibility to make an image.
Okey, I will try Clony XXL... it's for detecting which protection has this CDR, isn't it? And I will try to use Nero, to see what happens.
Thanks again.
I'm now very convinced that the only way is conecting my discman or Hi-Fi to my PC through audio jacks (analogic...

). Logically, I will loose all the digital quality... but, if I'm sincere, it's not an studio recording, it's an audience bootleg, and I'm sure that this loose of quality won't be listenable, because of the fans shouting and singing along with the band.