aumix-common software package provides Simple text-based mixer control program (common files), you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install aumix-common
aumix-common is installed in your system.
Make ensure the aumix-common package were installed using the commands given below,
$ sudo dpkg-query -l | grep aumix-common *
You will get with aumix-common package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Sound |
| Package | aumix-common |
| Version | 2.9.1-4 |
| Description | Simple text-based mixer control program (common files) |
| Sub Section | Sound |