Introducing SS-Mac: a simple app for changing audio outputs on the fly!

Hello, I am a developer of a simple app which allows to quickly switch audio outputs on Mac. I am very new to MacOS myself, and even more new to programming for Apple. However the program is working well and can be used normally.
I have posted it to the app directory. I know that it is not advised for developers to post their own software to the directory, however I decided to do so since I am blind myself and I understand how the application performs with accessibility in mind.
This topic is here for questions, suggestions or bug requests. What's below is the app description and usage details:
SS-Mac: a simple tool to switch soundcards on the fly.
1. Introduction
Sometimes users have a need to switch their soundcard on the fly, either in order to quickly route their system to another device or because some USB microphones set themselves as a default output device, taking the user’s speech and rendering their system unusable. SS-Mac aims to solve this, and in the future many other small, but annoying things with the audio system of MacOS.
2. Usage
As of current state (Alpha 1) the program is very basic, allowing you only to switch your output device. The program is controlled using global hotkeys, meaning that they will work no matter where you are on your system.
Current program hotkeys follows:
* CMD+OPTION+F9: Switches the system to the next available soundcard.
* CMD+OPTION+SHIFT+F9: Switches the system to the previous available soundcards.
3. Contact
If you want to contact the author, you can write an E-Mail to the following address:
nuno69 (a) (at) gmail (dot) com.
And you can get the program from the following link:
https://mao.s.elten.blog/wp-content/uploads/sites/627/2022/04/SS-Mac.app_.zip