Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallIf a Streamlabs Alert Box sound will not play, first determine whether the problem is the audio file or the alert’s settings and routing. Streamlabs lists MP3, OGG, and WAV as supported Alert Box formats. If a particular MP3 fails, Streamlabs’ older guidance recommends converting it to OGG; then save the alert and run a test. If the test is still silent, check mute, monitoring, audio track, and OBS routing settings.
First, identify which sound is missing
The file-format steps below apply to uploaded sounds used by Streamlabs Alert Box. A missing game or desktop sound is a separate capture and routing problem; changing an alert file’s format will not fix system audio capture.
- If one alert sound fails but other Streamlabs audio works, start with the file and that alert’s configuration.
- If alerts or other audio are broadly missing, check mute, monitoring, track selection, and routing.
Check the sound file and its format
Use a supported Alert Box format
Streamlabs’ Alert Box guide lists .mp3, .ogg, and .wav as supported audio formats: Setting up Your Streamlabs Alerts. A supported extension does not guarantee that a particular file is valid or will play in every setup.
Try OGG if an MP3 fails
Streamlabs’ article Sound files not working, last updated December 17, 2021, says MP3 files may fail with some streaming software and recommends converting troublesome sounds to OGG. Re-upload the converted file and wait for the upload or conversion to finish before testing. Pair this older workaround with the current supported-format list and a test in your own setup.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
The documentation cited here does not specify codec, sample rate, bitrate, duration, or maximum file size for Alert Box audio, so there is no documented value to tune in those fields.
Save the alert and run a test
- Open the relevant Alert Box settings in Streamlabs and confirm the sound is assigned to the alert you are testing.
- Save the settings after changing the file or alert configuration.
- Use the Alert Box test controls, or Streamlabs Desktop’s test widgets, to trigger a test alert before going live.
- Listen for the sound through the expected output device. If the test remains silent, continue with the routing checks below.
A test helps distinguish a problem with the configured alert path from an issue that appears only during a live broadcast.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Check mute, monitoring, tracks, and OBS routing
- Mute: Check whether the recent-events sound control is muted.
- Monitoring device: Confirm that Streamlabs is monitoring through a device you can hear. Streamlabs’ audio troubleshooting guidance says to select “Monitor and Output” when the monitoring device differs from the desktop audio device.
- Audio track: Check the alert’s selected audio track and whether that track is included in the output where you expect to hear the sound.
- OBS routing: If your setup uses OBS, inspect the alert’s “Route Audio to OBS” option and verify that the routed audio reaches the intended output.
Streamlabs describes these checks in its audio troubleshooting guide. Menu wording and available controls may vary across software versions and setups.
If the missing sound is desktop or system audio
Do not treat desktop capture as an Alert Box file-format issue. Streamlabs says Windows Desktop can capture microphone and system audio directly, while macOS does not natively allow direct desktop-audio capture and requires a virtual audio driver for that purpose. This distinction applies to capturing desktop/system audio, not to playing an uploaded Alert Box sound file. See Streamlabs’ desktop audio capture guidance for the operating-system distinction.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
If the sound repeats or echoes
A repeated alert can point to duplicate sources or windows rather than a bad file. Streamlabs’ echo troubleshooting guidance suggests closing extra pop-out windows and checking browser-source behavior; removing and recreating a source may also help. Some of that guidance uses older OBS or XSplit labels, so the exact menu names may differ in current versions.
When the usual fixes do not work
If a supported-format file still fails after re-uploading, saving, testing, and checking mute and routing, the documentation does not establish one definitive cause. Note whether other alerts and system audio work, which file type you tested, and which output device and route you use; then contact Streamlabs Support with those details.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Or let it run in the cloud
If your goal is a 24/7 YouTube channel playing uploaded recordings rather than fixing an Alert Box sound, StreamNeo is a separate option: upload a recording or build a playlist, add your YouTube stream key, and go live. It loops uploaded videos from the cloud, so nothing has to stay on at home. Every quality up to 4K 60fps is streamed as uploaded at one flat price per slot; it automatically recovers if YouTube drops the stream. The first day is free with no card, and the monthly option is $9.99 per month. Start your free day with StreamNeo.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
