Those who use a PC for work, play, watching movies and listening to music have surely encountered something like this more than once: A YouTube tab starts screaming through the speakers While you're in a Teams meeting or on an important call. Just the opposite of what you want, especially at the office. At home, on the other hand, you might prefer to have music playing in the background that automatically pauses when you open a video or start a show.
To resolve these scenarios we will need two things: firstly, to understand well How does per-app audio control work in Windows 10 and Windows 11? (and make the most of its native options). On the other hand, learn to install and configure advanced tools such as Background Music and company, which give us much finer control, even with features like automatic pause, system audio recording, or app-based equalization.
What is app-based audio control and why does it matter?
Windows treats each sound source as a separate entity, so you can Adjust volume and output devices for each program separately.Browsers, video players, games, messaging clients, and so on. This is especially useful if you work with multiple audio devices connected at the same time.
Among the most common combinations are the PC speakers, wired headphones, USB headset, Bluetooth, HDMI soundbars, or monitor/TV audioEach one appears as a separate device in Windows, so you can decide which application will play music through each one, or, if you prefer, set a global device for the entire system. If you're using Realtek hardware, you should also check the basic sound settings with Realtek to fine-tune the behavior of the exits.
Using this system properly avoids typical situations like thinking you have no sound when in reality Windows is sending the audio to another output. that you're not using (for example, the HDMI monitor instead of the headphones). That's why it's so important to be clear about the configuration you want before you start tweaking parameters.
In many cases, simply changing the default device manually from the volume icon in the taskbar will suffice. If you want to go a step further and assign different outputs to specific applications (for example, video calls to headphones and music to living room speakers) you will have to resort to the advanced Windows volume mixer or third-party utilities.
Quickly choose your audio device in Windows 10 and Windows 11
Before getting into fine settings, it's a good idea to master the most basic trick: Change the global audio output on the fly from the taskbarIt's what you'll use 90% of the time when you simply want everything to play through other headphones or speakers.
In Windows 10, click the speaker icon in the notification area and then click the device name that appears above the volume bar. A menu will open with All available outputs: internal speakers, headphones, HDMI, Bluetoothetc. The one you choose will become the default device and all apps configured to use the default device will ring through it.
In Windows 11, the panel is somewhat more minimalist, but the idea is the same. Clicking on the volume icon opens the general controls. Then click on the arrow that appears to the right of the slider to view the list of output devices and select the one you want to use at that moment.
If a device isn't listed, it's probably disabled or misconfigured. In that case, right-click the volume icon and go to sound options or the classic "Sounds" panel. On the playback tab, you'll see all detected audio devicesincluding inactive ones, and you can enable them or mark them as default. If they don't appear, follow our guide to fixing audio problems step.
Configure audio per application using native Windows options
Windows 10 and Windows 11 include, albeit rather hidden, a very competent system for define volume and input/output device for each application Separately. You don't need to install anything extra for the basics; you just need to know where the right menu is.
In Windows 10, open Settings with Windows + I, go to "System" and then to "Sound". At the bottom you'll see a link called something like "Device preferences and application volume» within the advanced sound options. Pressing it will take you to the key panel.
That panel displays the overall system volume at the top and a list below it with all applications that are playing or can play audio At that moment. Next to each one you will have its own volume control and two drop-down menus: one for output and one for input.
The volume of each app is defined as percentage of master volumeFor example, if the overall volume is at 10% and you set the app to 100%, it will sound at 10% of its actual volume. If you set it to 50%, it will sound at 5%. This allows you to balance the sound without constantly adjusting the overall volume.
In the output dropdown menus, you can decide which device each program will use: PC speakers, USB headphones, Bluetooth, HDMI monitor, etc. Then, in the input dropdown menu, you choose the microphone or audio interface for each application.
In Windows 11, the process is slightly different. When you open the sound panel from the taskbar, click on «More volume settings optionsTo go to the sound section within Settings, scroll down to "Volume Mixer." You'll find a more modern version of the same concept: volume and input/output devices per application, with the same logic.
Playing audio in the background: single-process model in Windows 10
When we talk about Background Music in a more technical sense within the Windows ecosystem, the concept of Background media playback in UWP appsThis is what allows a music app to continue playing even if you minimize it or switch to another application.
To enable this functionality in a UWP app from Visual Studio, edit the Package.appxmanifest file. In the "Capabilities" tab, select the option to background media playbackIf you prefer to edit the XML manually, you need to ensure that the uap3 namespace is defined in the Package element and then add the backgroundMediaPlayback capability within Capabilities.
Something like an entrance uap3:Capability Name=»backgroundMediaPlayback»provided the uap3 namespace is correctly declared. Without this capability, the app will stop playing as soon as it starts running in the background, no matter how well you've configured the player within the code.
The system also introduces two lifecycle events: EnteredBackground and LeavingBackground. You must register handlers for these in the App class constructor (App.xaml.cs), just as you do with the Suspending event. They are responsible for notifying you when the application enters or exits background mode.
It's common practice to maintain a boolean variable indicating whether the app is running in the background. When `EnteredBackground` occurs, this flag sets to true; when `LeavingBackground` is triggered, it returns to false. It's important that Do not run long tasks during EnteredBackground because it could make the transition seem slow or even cause the system to decide to close the app.
Memory and network requirements when playing audio in the background
The other critical aspect of background audio is memory. When an application runs in the background, Windows reduces the memory limit that it can consumeIf you skip it, the system won't hesitate and will kill it, even if it was playing music.
To manage this properly, you need to subscribe to the AppMemoryUsageIncreased and AppMemoryUsageLimitChanging events. Each time they are triggered, you should check the application's current memory usage and the new allowed limit, and release resources if necessaryFor example, by discarding caches, releasing bitmaps, closing non-visible views, or stopping non-critical tasks.
Regarding the network, multimedia sources that pull online content (HTTP streams, etc.) maintain the Open connection while downloading data and release it as soon as the download finishes. If you're using MediaStreamSource, it's important to properly update the buffered range using SetBufferedRange so the platform knows when to disconnect.
If the application needs to make other network calls in the background that are not directly related to downloading the multimedia content itself, it is advisable to encapsulate them in specific background tasks such as MaintenanceTrigger or TimeTrigger. These are the tasks that Windows allows to run more freely when the main app is out of the foreground.
Additionally, if you disable the automatic integration of the MediaPlayer with the system's Media Transport Controls (SMTC), you will need to integrate manually with the SMTC And, if you use different APIs like AudioGraph, you'll also need to create that integration manually if you want playback to continue in the background.
Background Music on Windows: Fine-tuned control per application
Aside from the UWP model, on the classic desktop many users resort to dedicated applications such as Background Music for master the volume and behavior of each programAlthough it is originally best known on macOS, there are also implementations and ports designed for Windows that follow a very similar philosophy.
The idea is simple: Background Music runs in the background and shows you a panel from which you can adjust the individual volume of each applicationThis includes browsers, media players, instant messaging, and even video games. All of this is ad-free, requires no constant internet connection, and uses very few resources.
One of its strengths is the function of Automatic music pause when other content is playingImagine you're at home with music playing and suddenly you launch a video in another app: Background Music temporarily pauses your music player and resumes playback as soon as the video finishes. This is the exact opposite of what you might want at work, where you prefer your browser to be muted to avoid any surprises.
This automatic pause feature is usually supported by most common music players, so you just need to install them and let Background Music detect them. You can also set pause times directly from the interface. Custom levels per app (including completely muting certain apps), thus adjusting the sound environment to your liking in each scenario.
Another handy extra is the ability to record system audio. If Background Music is playing, you can open QuickTime Player or any compatible recording tool, create a new audio or screen recording, and select Background Music as input device.
Install and configure Background Music step by step
For Windows, Background Music is available as a project Open source code hosted on GitHubFrom there you can download the latest stable version, review specific instructions, and check the minimum requirements. It's advisable to read the README file to see if it requires additional libraries or specific versions of Windows.
If you use package managers like Homebrew in supported environments, you can also install it with a single command like this: brew install –cask background-musicThis automates the download, installation, and updates, so you don't have to worry about anything else. It's very convenient if you usually keep your applications up to date from the terminal.
Once installed, Background Music runs in the background and adds an icon to the menu bar or notification area (depending on your system). From there, you can open its main interface, where you'll see all apps that are currently streaming audioFor each one you can define the specific volume, leave it silent, or configure it to behave in a certain way when another app starts playing content.
In work environments, for example, you can leave the system volume at a moderate level, increase it slightly email notifications and Teams alerts And at the same time, set your browser or media player to the lowest volume or mute it. This ensures that important calls and notifications are heard, but prevents you from being startled when a website suddenly decides to play a video.
At home, however, you can reverse the approach. Keep the background music at a pleasant volume and take advantage of the automatic pause function to... It pauses temporarily when you play a movie or video.Once it finishes, Background Music reactivates the music player and you continue where you left off, without having to touch anything.
Troubleshooting common audio problems in Windows
Tinkering with devices, mixers, and audio routing sometimes brings to light latent problems. Luckily, most typical issues have A relatively simple remedy if you know where to look. and you follow a logical order.
If an audio device doesn't appear on any list, the first thing to check is the obvious: cables properly connected, Headphones turned on and in pairing mode If they are Bluetooth, check the correct input selector on soundbars or AV receivers, etc. Then, open Device Manager (Win + X) and check the "Sound, video and game controllers" section.
- If you suspect it's a problem with older drivers, check how to deal with them. legacy drivers and download the drivers from the manufacturer's official website if necessary.
- When a warning icon appears, right-click it and choose "Update driver" to automatically search for drivers. If that doesn't fix the problem, you can uninstall the device from there and restart your PC. Windows will reinstall the driver on its own..
- If the audio doesn't change despite adjusting volumes and selecting devices, make sure nothing is muted and that in "Settings > System > Sound" The correct output device is active.
- If the volume and device settings reset every time you restart, check in "services.msc" that the "Windows Audio" service is running. automatic start type and run the audio playback troubleshooter From the Troubleshooting section of Settings. As a last resort, you can always perform a System Restore to a point before the problems occurred.
With all these pieces, you have in your hand Make your PC sound much more predictable and comfortableWhether you work in a quiet office or set up a small media center at home, it's just a matter of taking a little time to configure volumes and routing to your liking. From there, the system will do the rest, and you'll just have to enjoy it without any surprises or unexpected noises.
