Thanks for your answers and your help. My answer is in one message in the order I got your messages.
>The quality of the drive is very important. I use Samsung (Toshiba-Samsung) or >Pioneer drives. I have here at the moment only Matshita (Apple slot-in) and LiteOn (ThinkPad) drives so, I have to give it a try to find out their quality. >I use sox ... Sounds good. Maybe it will be a script to also use the CDDB information to name folders and files. >You can try to clean it gently with isopropyl alcohol or similar. Yes, as long as you have no slot-in drive. >cdio does not perform any error correction. It simply asks the drive for the >data and accepts what it gets. What is not bad, if the drive does a good error correction itseelf. But I think, this is a illusion. >That was important in the 1990s, but I don't know if it actually makes any >sense or even works with modern drives. That's the question to know, which tool to choose. The last version of cdparanoia is from 2008 - no idea, why development stopped.

