GREP (Global REplace and Print) command used in iThoughts app on iOS

m..n - Tamzin, Germaine, Tomlin, McEntire

m.n - Amanda, feminist, Minogue, Monaco

man$ - matches what ends in man Portman, Kidman, Chapman but NOT Amanda
sausage$ will match all text where the line ends with sausage ($ means 'end of line')

^ma - matches what starts in ma Mayor, May, Mary, Matt but NOT Pitman, Huma
^sausage will match all text where the line starts with sausage (^ means 'start of line')

sausage[1-3] will match on sausage1, sausage2, sausage3 but NOT sausage4.

[0-9] - only digits [A-Z] - only letters

freac free audio encoder (free GPL) use to convert all mp3 320kbps to opus 96kbps. Sounds excellent and 3x small than mp3. Freac also use to get an audio stream from a mp4 or mkv video file.

Drag folder(s) into freac. Don't do more than 200 at once.

General settings I choose filename usually or <track> - <artist> - <title>

opus encoder settings 96kbps Music VBR

LAME mp3 encoder settings 192kbps for audiobooks from mp4/mkv video files

Encode settings - Encode output to same source folder and Delete original files after encoding saves tons of time

freac encodes in parallel using all CPU cores

Veracrypt is a free hard disk and partition encryption program. Even has plausible deniability if so needed. Create a Volume by following the easy tutorial on Vercrypt's website.

Encryption Algorithms - all are Key size 256 bits and Block Size 128 bits

AES J. Daemen, V. Rijmen 2001
Camellia Mitsubishi Electric and NTT of Japan 2000
Kuznyechik National Standard of the Russian Federation GOST R 34.12-2015 2015
Serpent R. Anderson, E. Biham, L. Knudsen 1998
Twofish B. Schneier, J. Kelsey, D. Whiting, D. Wagner, C. Hall, N. Ferguson 1998

Personal rating Kuzneychik > Camellia > Serpent > AES > Twofish so with that said choose your poison combo
AES-Twofish 
AES-Twofish-Serpent 
Camellia-Kuznyechik 
Camellia-Serpent 
Kuznyechik-AES 
Kuznyechik-Serpent-Camellia 
Kuznyechik-Twofish 
Serpent-AES 
Serpent-Twofish-AES 
Twofish-Serpent   

Encryption benchmark. Slower I'd assume is better

Hash Algorithms - recommend either Whirlpool or Streebog

RIPEMD-160 1996 160 bits
SHA-256 by NSA 2002 256 bits
SHA-512 by NSA 2002 512 bits
Whirlpool by Vincent Rijmen (co-designer of the AES encryption algorithm) and Paulo S. L. M. Barreto 2003 512 bits 
Streebog competitor of NIST SHA-3 standard 2012 512 bits 


Hash speed. Slower indicates better

Select Device / input password / check save cache if mounting multiple drives with the same password

If more than one drive or partition is encrypted choose Mount All and Dismount All

always select the partition not the root or 200MB partition

shows Encryption and Hash algorithms used

when it boots up never choose Initialize just Ignore else it'll format your disk

On Mac and Windows veracrypt under Emby just works with encrypted external drives.

Linux Mint here's what needs to be done.

sudo mkdir /media/emby

each time you mount the encrypted drive

veracrypt /dev/sdb2 --filesystem=none 

(or you can use the GUI and click OPTIONS then Filesystem check Do Not Mount)..change sdb2 to whatever your disk partition is

sudo mount -o umask=022,uid=mint,gid=mint /dev/mapper/veracrypt1 /media/emby

put your username in place of mint
then to umount it do

sudo umount /media/emby

then in veracrypt GUI dismount

m4b audiobook players

iOS BookPlayer (free) shows chapters.

Android Smartbook Audio Player $2 and Listen Audiobook Player $2 both show chapters.

Mac OS use IINA or VLC - Linux use Cozy and for more than 132+ chapters use DeadBeef audioplayer.