You Can Record Computer Audio Losslessly: Methods & Tips from the Experts

Ever tried to record calls or capture streaming music, only to realize your recording has no sound? Why is recording audio from computer harder than it seems?

Many users have found that modern systems (Windows 11/10 and macOS Ventura onward) block direct system audio capture by default. But don't worry - there are plenty of real-world user testimonials on Reddit, Quora, and Microsoft's official support website demonstrating practical methods for clear computer audio recording. Let's delve into them.

Challenges and User Pain Points in Capturing Computer Audio

Recording PC sound is not simple due to different restrictions. Below are the most common challenges people report when trying to record internal audio on Mac, Windows, and Linux.

These pain points define exactly what our solutions must address. The main issue users face when searching for "record computer audio" is that their system doesn't support recording internal audio. This system limitation often frustrates users. Based on feedback from Reddit and technical forums, here are the common causes and solutions.

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How to Record System Audio on Windows PC Without Limitations

Many users trying to record internal audio on Windows 10/11 (such as YouTube videos, music, games, or online meetings) encounter the some frustrating issue, like audio from apps or browsers is completely missing in the recording, or recorder apps show messages like "No input device detected" or "Cannot capture system sound."

As one Reddit user described, "I tried recording my computer sound using the default Voice Recorder, but it only picks up my mic. There's no Stereo Mix option anywhere in my sound settings." This issue is extremely common and stems from how Windows manages audio input devices at the system level.

Solution 1. Use Professional Computer Audio Recorder

EaseUS RecExperts offers one of the easiest and most reliable solutions for users who don't want to tinker with system drivers or hidden settings. It can record audio from gameplay, streaming video, online meetings, etc.

Features:

• Can record system audio and microphone simultaneously or separately on Windows and Mac.
• Works even when the Stereo Mix device is disabled or missing.
• Compatible with all major sound cards (Realtek, Intel, AMD, etc.).
• Schedule recording to automatically start and stop recording sound
• Supports MP3, WAV, AAC, and WMA export formats.

Detailed steps on how to record computer audio on Windows and Mac with EaseUS Screen Recorder:

Step 1. Launch EaseUS RecExperts and select the Audio recording mode from the main interface. This mode is designed specifically for capturing voice recordings, narration, or podcasts without screen footage.

Step 2. Make sure the Microphone icon is toggled on. Then, click the down arrow next to the mic icon to open additional settings. From here, check the option for Microphone noise reduction to automatically filter out background sounds such as keyboard clicks, fan noise, or ambient chatter.

Step 3. Click the red REC button and wait for the 3-second countdown. Once the session starts, you can pause, resume, or stop the recording at any time using the floating toolbar, ideal for recording in multiple takes or reducing interruptions.

Step 4. When the recording ends, you'll be taken to the preview window, where you can play back, trim, and manage your audio file. This is useful for reviewing your voice clarity or making basic edits before saving or exporting the recording.

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Solution 2: Open-Source Software for Computer Audio Recording

"WASAPI loopback in Audacity works like magic - no virtual cables or drivers needed." -r/audacity

Audacity remains the go-to free and open-source audio recorder for pure internal audio and mic capture. It can record system playback via the WASAPI loopback interface - even when Stereo Mix isn't available. It also includes built-in editing functions like trim, noise reduction, normalize, and mixdown to enhance your audio recording.

How to set up Audacity to capture internal audio on Windows:

Step 1. Launch Audacity and set the Audio Host to Windows WASAPI.

Step 2. Set Recording Device to your playback device (e.g., "Speakers (loopback)" or "Headphones").

Step 3. Click the red Record button and start playback.

Step 4. When finished, stop recording and export your file as an MP3 or WAV file.

Mac QuickTime Can Only Record Microphone Audio - Fixed

Unlike Windows, macOS enforces strict system-level audio limitations for privacy and security reasons. Apple intentionally restricts this to prevent unauthorized capture of private communications or DRM-protected audio. Even Apple's QuickTime Player can only access microphone input, not speaker output. If you want to record system sound on a Mac for personal use, you need to use virtual audio drivers (e.g., BlackHole or Soundflower) or a third-party app to manually route system sound.

Solution 1. Install Virtual Audio Driver

BlackHole and Soundflower create a virtual sound card on Macs, allowing desktop audio to be rerouted and recorded by apps like QuickTime, OBS, or Audacity. If you have some technical experience, try this method to capture system audio on a Mac.

Step 1. Download and launch BlackHole.

Step 2. Open Audio MIDI Setup and click + to create Multi-Output Device. Add your main output device and BlackHole 2ch.

Step 3. Set this multi-output device as the default in System Settings > Sound > Output.

Step 4. In your recording software, select BlackHole 2ch as the input device. Then, start recording.

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Solution 2. EaseUS RecExperts for Mac to Record Internal Audio

If you don't want to mess with virtual drivers or manual routing, an all-in-one recorder like EaseUS RecExperts Mac is the easiest solution. It's built-in system audio driver automatically handles internal sound - no extra configuration required.

It can record system audio and microphone audio simultaneously, or capture internal audio only - best for capturing audio from YouTube, Spotify, Zoom, etc. It works seamlessly on macOS Monterey, Ventura, and Sonoma, including M1/M2/M3/M4 chips.

Step 1. Launch EaseUS RecExperts and choose "Audio" form the interface. Select "System sound" and "Microphone" together.

Step 2. Clcik on the "REC" button to start recording audio. The recording will start after a three-second countdown. To stop recording, click on the red square icon.

Step 3. After that, you will be led to the recording list window, where you can listen to or edit the audio recording freely.

Solution 3. Create an Aggregate Device to Capture Multiple Audio

While browsing the posts, one user mentioned that it's possible to capture computer audio on a Mac by creating an Aggregate Device. I tested it on two MacBook Airs with Apple M1 Chip Sequoia 15.1 and M2 Sequoia 15.6.1, respectively. It was indeed a success! However, there were some minor flaws:

• Cannot record system audio alone, only record desktop audio and external sounds simultaneously.
• The recorded computer sound is very low.

Step 1. Open the Audio MIDI Setup application and click the + button in the bottom left corner.

Step 2. Choose Create Aggregate Device and configure the relevant input/output devices in the left sidebar.

Step 3. Open the QuickTime Player recording taskbar, click Options, and select Aggregate Device as the source.

How to Record Computer Audio Online Free

If you prefer recording sound from a computer without any software or extra add-ons, use an online screen recording tool instead. You can perform some basic audio recording tasks with simple clicks.

EaseUS Online Screen Recorder is free and available in Chrome, Firefox, Edge, Safari, and Opera to record audio from a computer online, including system sound and microphone audio.

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Computer Streaming Audio Recording Failure & Legal Solution

Many users want to record audio from streaming services like Apple Music, Spotify, and Disney+, but these platforms use DRM and HDCP to block recording or result in black screen. Normal tools can't access the encrypted audio stream directly. They hope for a solution that allows recording system audio while respecting copyright and ensuring legal use.

For personal and fair-use purposes, a method tested and proven effective by users on Reddit and other forums is available.

Disable Hardware Acceleration in Browser

Turning off hardware acceleration can help capture streaming audio by disabling certain GPU-based protections (such as HDCP) that prevent recording tools from accessing the system's audio output. By forcing the browser to use software rendering instead, the recorder can properly detect and capture the playback sound.

❗Note: Some users report that this method isn't always practical and may affect video playback smoothness.

Steps on how to disable it:

Step 1. Go to Chrome's Settings > System and find the Use graphics acceleration when available option.

Step 2. Disable it and restart Chrome. Then, log in to the streaming service where you want to capture audio.

Step 3. Launch your computer's recording software, such as OBS, and then start recording.

Of course, if you prefer a more straightforward and more reliable solution, please use a professional third-party streaming audio recorder like EaseUS RecExperts.

Troubleshooting – Overcoming Common Audio Recording Challenges

Even with the right tools, recording computer audio can be tricky. Users often encounter issues ranging from no sound to poor quality.

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Conclusion

To record computer audio efficiently, choose a method based on your needs. For high-quality results, use a professional external microphone, minimize background noise, and select a suitable recorder. EaseUS RecExperts is ideal for capturing both internal and external sound without background noise.