I don't play games at all. It's a pointless waste of time.

As Roger Caillois sum it up in  Man, Play and Games (1961):

So your stance is in accordnance with the above characterization.

But what about the 'fun' element that is also hightlighed above .( time absorbing the player intensely and utterly ).
I mean if someone say : 'I dont play games at all . It:'s pointless and fun' that would sound strange ? Doesnt it?
What about if somebody said : 'I dont play video games at all. It's pointless and no fun at all' would that sound less strange?

Also I'd like to propose an devuan initiative in the spirit of https://libregaming.org/  because playiing games together is more fun.

Don't use deb.multimedia.org

A blanket "don't use" is a bit FUDish for me TBH. Like any 3rd party repository, the magnitude of the mess is largely dependent on what one installs and the sensibility of one's pinning.

Set up package priorities properly (i.e. everything but the specific packages you want pinned to -1) and there's no harm in installing a few things from deb-multimedia... As long as you avoid core media library replacements, they will most certainly make a mess.
Nothing a little apt-foo can't fix mind, but unless you really need, say, ffmpeg compiled with all the codecs possible, it's a situation best avoided.

Alternatively, simply installing the individual binary packages works fine as well, since they don't depend on anything else that isn't in the debian/devuan repos.

Just download the cdemu tarball from upstream, unpack it, then run debuild -us -uc in that directory to build the .deb. The tarball contains a functional debian directory.

And why tracks starts from 2 not 1. First track is system meta data?

The first track is the iso9660 filesystem, in this case containing the game data files (it's just empty in the "music only" image).
Most games from the late 90's that included music used these mixed-mode discs, where the first track is mode 1 (CD-ROM) and the rest of the tracks are mode 0 (CD-DA) audio tracks. That way the music can be played by the drive's audio playback hardware without the CPU load of decoding, say, MP3 files.
If you put such a disk in a CD player it will actually try to play track 1 as audio... With somewhat unpleasant results. Your ripping software is smarter and will ignore it.

It's the same on any OS, you learn what software you like by trying it out or by word-of-mouth. You find windows easier because you have more experience with it.

Well you did pick the hard way, compiling it by hand in your home directory. Installing from the deb-multimedia repos is pretty painless (that's how I install it), and using dpkg to build a .deb package from the source shouldn't be much worse.
It's common practice on linux to install applications system-wide using the package manager, so it's not surprising that going against the grain will make things difficult. Had you built and installed a .deb package, it should have set up the udev rules and all that for you.

Of course if debian actually shipped the damn thing in their repos, there would be no hassle whatsoever. I really don't get the complete lack of interest from the maintainers on this particular package TBH, especially as the cdemu devs have gone so far as to include all the needed files already.

Understanding of CD formats, experience, and a little guesswork. Also extrapolation from the bin/toc example in the cdemu manual, where it demonstrates giving cdemu only the .toc filename and it figuring out loading the matching .bin by itself.
.ccd, .cue, and .toc are all "table of contents" files that define how to read the matching .bin or .img, it's pretty logical that you'd need to load that first. Simply opening the .ccd as text should make it obvious what it is and why you might need it.
.sub is subchannel data, and IIRC it's optional unless the disk actually uses a subchannel. Subchannels are most commonly used for supplimental data such as CD-TEXT (track titles), pre-emphasis data... or for copy-protection bullshit.

Thanks! Now all seen!)
And why tracks starts from 2 not 1. First track is system meta data?

May be. But where find this soft? On Windows all much easy. I now what software is better and what not.  On Linux i cant know that.

Opposite here to me. I am on Windows since 1996. And Linux i am try since 2016 and its very hard to understand for me after Windows philosophy.
e.g. This cdemu its a red-eyed bloody mess for me. Compile and installing  and run. Its all very difficult.
Only this instructions help to run cdemu daemon https://github.com/cdemu/cdemu/issues/1 … -500270189
ps and how to know that for mount needed all 3 files *.img, *.ccd, *.sub but mount needed only *.ccd?

steve@perdition ~/Incoming/groundzero/full $ unrar x quake2-ground_zero.rar 

UNRAR 6.12 freeware      Copyright (c) 1993-2022 Alexander Roshal

Extracting from quake2-ground_zero.rar

Extracting  ground.zero.ccd                                           OK 
Extracting  ground.zero.img                                           OK 
Extracting  ground.zero.sub                                           OK 
All OK
steve@perdition ~/Incoming/groundzero/full $ cdemu load 0 ./ground.zero.ccd
steve@perdition ~/Incoming/groundzero/full $ cdemu status
Devices' status:
DEV   LOADED     FILENAME
0     True       /home/steve/Incoming/groundzero/full/ground.zero.ccd
steve@perdition ~/Incoming/groundzero/full $ cdemu device-mapping
Device mapping:
DEV   SCSI CD-ROM     SCSI generic   
0     /dev/sr1   
steve@perdition ~/Incoming/groundzero/full $ cdparanoia -Q -d /dev/sr1
cdparanoia III release 10.2 (September 11, 2008)

Table of contents (audio tracks only):
track        length               begin        copy pre ch
===========================================================
  2.    13234 [02:56.34]   124760 [27:43.35]    no   no  2
  3.    11662 [02:35.37]   137994 [30:39.69]    no   no  2
  4.    14547 [03:13.72]   149656 [33:15.31]    no   no  2
  5.    13307 [02:57.32]   164203 [36:29.28]    no   no  2
  6.    13487 [02:59.62]   177510 [39:26.60]    no   no  2
  7.    13418 [02:58.68]   190997 [42:26.47]    no   no  2
  8.    13054 [02:54.04]   204415 [45:25.40]    no   no  2
  9.    13878 [03:05.03]   217469 [48:19.44]    no   no  2
 10.    11145 [02:28.45]   231347 [51:24.47]    no   no  2
 11.    20568 [04:34.18]   242492 [53:53.17]    no   no  2
TOTAL  138300 [30:44.00]    (audio only)
steve@perdition ~/Incoming/groundzero/full $ cdemu unload 0

Looks fine to me. vOv

There are plenty of CD rippers. There are fewer drive emulators, because drive emulators are primarily used either for dealing with proprietary windows disk image formats or for piracy... Neither of which are a priority for free software.
CDemu works fine though, why do you need more than one virtual disk drive anyway?

I disagree. Finding the software needed to load those clonecd images was extremely easy, and I didn't even have to navigate the minefield of shitty websites, adware, crippleware, and malware I would have on windows.
The only "difficult" part is that debian doesn't package cdemu. That bit is plain ridiculous, it's been requested repeatedly over the years.

The above is for demonstration purposes only of course, and I absolutely did delete those pirated images when I was finished You should still buy the game on GOG.

freeartist@devuan:/media/freeartist/a3291c87-c05e-4f36-a45a-b5f6b1dc98bd/home/deepforest/Downloads/Quake_II/dk.toastednet.org/music$ cdemu load 0 ground.zero.img 
freeartist@devuan:/media/freeartist/a3291c87-c05e-4f36-a45a-b5f6b1dc98bd/home/deepforest/Downloads/Quake_II/dk.toastednet.org/music$ lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda      8:0    0 186.3G  0 disk 
├─sda1   8:1    0  10.5G  0 part 
├─sda2   8:2    0     1K  0 part 
├─sda5   8:5    0  29.3G  0 part 
├─sda6   8:6    0  48.8G  0 part 
├─sda7   8:7    0  48.8G  0 part 
└─sda8   8:8    0  48.8G  0 part 
sdb      8:16   0 149.1G  0 disk 
├─sdb1   8:17   0  70.3G  0 part 
├─sdb2   8:18   0   4.5G  0 part 
└─sdb3   8:19   0  74.2G  0 part 
sdc      8:32   0   149G  0 disk 
├─sdc1   8:33   0  70.3G  0 part /media/freeartist/a3291c87-c05e-4f36-a45a-b5f6b1dc98bd
├─sdc2   8:34   0     4G  0 part [SWAP]
└─sdc3   8:35   0  74.7G  0 part /
sr1     11:1    1 270.5M  0 rom  /media/freeartist/GRNDZERO
freeartist@devuan:/media/freeartist/a3291c87-c05e-4f36-a45a-b5f6b1dc98bd/home/deepforest/Downloads/Quake_II/dk.toastednet.org/music$ 

no tracks

freeartist@devuan:/media/freeartist/a3291c87-c05e-4f36-a45a-b5f6b1dc98bd/home/deepforest/Downloads/Quake_II/dk.toastednet.org/music$ cdda2wav -B -D /dev/sr1
Type: ROM, Vendor 'CDEmu   ' Model 'CD-ROM          ' Revision '1.0 ' MMC+CDDA
569344 bytes buffer memory requested, 4 buffers, 55 sectors
#icedax version 1.1.11, real time sched., soundcard, libparanoia support
 DATAtrack recorded      copy-permitted tracktype
      1- 1 uninterrupted             no      data
Table of Contents: total tracks:1, (total time 30:46.25)
  1.[30:46.25]

Table of Contents: starting sectors
  1.(       0), lead-out(  138475)
CDINDEX discid: EjtM..pg1DZvGsgUV956UdGuR78-
CDDB discid: 0x02073601
CD-Text: not detected
CD-Extra: not detected
This disk has no audio tracks
freeartist@devuan:/media/freeartist/a3291c87-c05e-4f36-a45a-b5f6b1dc98bd/home/deepforest/Downloads/Quake_II/dk.toastednet.org/music$ 

And why Linux have very few CDemu and CDrippers software? On Linux its very hard to find software.

i.e. mount audio image with cdemu and rip music with asunder

freeartist@devuan:~/Downloads/ISO_tools/cdemu-daemon-3.2.6/build$ ./cdemu-daemon
Starting CDEmu daemon with following parameters:
 - config file: (null) (exists: 0)
 - num devices: 1
 - control device: /dev/vhba_ctl
 - audio driver: null
 - bus type: session
 - default CDEmu debug mask: 0x0
 - default libMirage debug mask: 0x0

Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)cdemu0: Kernel I/O: failed to open control device /dev/vhba_ctl: No such file or directory!
cdemu: Daemon: failed to start device #0!
cdemu: Daemon: failed to create device!
Daemon initialization and start failed!

freeartist@devuan:~/Downloads/ISO_tools/cdemu-daemon-3.2.6/build$ 

root@devuan:/home/freeartist/Downloads/ISO_tools/vhba-module-20211218# modprobe vbha
modprobe: FATAL: Module vbha not found in directory /lib/modules/6.0.0-4-amd64
root@devuan:/home/freeartist/Downloads/ISO_tools/vhba-module-20211218# 

root@devuan:/home/freeartist/Downloads/ISO_tools/libmirage-3.2.6/build# cdemu-daemon
Starting CDEmu daemon with following parameters:
 - config file: (null) (exists: 0)
 - num devices: 1
 - control device: /dev/vhba_ctl
 - audio driver: null
 - bus type: session
 - default CDEmu debug mask: 0x0
 - default libMirage debug mask: 0x0

Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)Using cross-namespace EXTERNAL authentication (this will deadlock if server is GDBus < 2.73.3)

freeartist@devuan:~/Downloads/ISO_tools/cdemu-client-3.2.5$ cdemu add-device
ERROR: Failed to acquire daemon interface version (this most likely means your daemon is out-of-date): g-dbus-error-quark: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name net.sf.cdemu.CDEmuDaemon was not provided by any .service files (2)
freeartist@devuan:~/Downloads/ISO_tools/cdemu-client-3.2.5$ 

I am try convert ccd and nrg to iso

ISO images do not support mixed-mode redbook CDs, so converting to iso will preserve the ISO9660 data track (if any) and discard the audio.
CD audio tracks are not files, and that part of the disk isn't really a filesystem... so you can't mount it (or an image of it) like a filesystem, loopback or otherwise.

You will need to either burn physical media or load the image in a drive emulator, then extract ("rip") and encode the audio tracks.
Suitable drive emulators would include daemontools (most common, but notorious for shovelware in the installer) or elby clonedrive on windows, or cdemu / libmirage on linux. Acetoneiso might be able to do it as well, but it's ancient and honestly I don't remember.

CDemu still isn't in the debian / devuan repos for some unfathomable reason, but you can get it from deb-multimedia or follow the instructions on the cdemu site.
For rippers, the options are legion. There are several dedicated applications in the devuan repos and most cd writing software can do it as well.

Jeez, what do they teach the kids these days anyhow? I thought everyone knew how to deal with audio CDs.

Ed. Note that recent versions of cdemu use systemd to launch cdemu-daemon on demand, so for devuan you'll need to start it by other means. It can run under a normal user account, so starting it manually when you need it, a desktop autostart entry, or the likes of daemonize in some profile rc or other work fine (provided you are in the appropriate group to access the vhba device of course).

Yes

I am try convert ccd and nrg to iso and after extract. For convert i use iat, ccd2iso, poweriso. For extract i am mount as loop device converted iso but its been empty.

I do not find it there.

Thanks for that its very helpful)