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Show HN: Beatsync – perfect audio sync across multiple devices

Hi HN! I made Beatsync, an open-source browser-based audio player that syncs audio with millisecond-level accuracy across many devices.

Try it live right now: https://www.beatsync.gg/

The idea is that with no additional hardware, you can turn any group of devices into a full surround sound system. MacBook speakers are particularly good.

Inspired by Network Time Protocol (NTP), I do clock synchronization over websockets and use the W

Motorola's 'Swiss Army Knife' Take on AI Makes My Head Spin

Commentary: Rather than going it alone, Motorola's using several AI efforts together. The approach might help us figure out what we really want AI to do on phones. https://www.cnet.com/tech/mobile/motorola-took-a-swiss-army-knife-approach-with-ai-and-it-makes-my-head-spin/#ftag=CADf328eec

3d | cnet.com
Can NAD Plus Supplements Really Reverse the Aging Process? We Asked a Doctor to Find Out

These anti-aging supplements are gaining popularity, but you should know their benefits, side effects and risk factors before taking them. https://www.cnet.com/health/nutrition/nad-supplements/#ftag=CADf328eec

3d | cnet.com
SSI May 2025 Payment Schedule: You're Getting Paid Twice This Month. Here's Why

Supplemental Security Income recipients will receive two payments in May. We'll break down why this happens and when you can expect your second payment to come through. https://www.cnet.com/personal-finance/ssi-may-2025-payment-schedule-youre-getting-paid-twice-this-month-heres-why/#ftag=CADf328eec

3d | cnet.com
Sorry Shoppers, Amazon Says Tariff Cost Feature 'Is Not Going to Happen'

The White House said Amazon would be considered a "hostile and political act" if it listed tariff prices next to products. But the company denies any plans to do so. https://www.cnet.com/tech/services-and-software/sorry-shoppers-amazon-says-tariff-cost-feature-is-not-going-to-happen/#ftag=CADf328eec

3d | cnet.com
Ease Anxiety-Related Chest Pains With These 4 Tried and Tested Tips

Feeling anxious and experiencing chest pains is more common than you might think. But thankfully, there are a few things you can do to improve matters https://www.cnet.com/health/mental/ease-anxiety-related-chest-pains-with-these-tried-and-tested-tips/#ftag=CADf328eec

3d | cnet.com
 Help! All the Dyson fans look exactly the same – which one should I buy?

An at-a-glance rundown of your options, so you don't end up with the wrong fan (or fan-purifier, or fan-purifier-heater) for your needs.

https://www.techradar.com/home/air-quality/dyson-fan-range-guide

 Elden Ring Nightreign actually runs on your old GPU, and more AAA games need to follow its lead

I’m high-fiving FromSoftware for its budget-friendly spec requirements for Elden Ring Nightreign, and other developers are put on notice.

https://www.laptopmag.com/laptops/gaming-laptops-pcs/elden-ring-nightreign-pc-requirement-gpu-

 AMD's top Ryzen CPUs have never been cheaper — Up to 35% off at Amazon Gaming Week

Select AMD Ryzen 7000 and 9000 CPUs are up to 35% off at Amazon during gaming week, and I'm seeing some of the lowest prices ever.

https://www.windowscentral.com/hardware/cpu-gpu-components/amazon-gaming-week-amd-ryzen-deals

Bitcoin mining is no longer profitable
DDoS attacks have skyrocketed 358% year-over-year, report says
Philips Hue’s sibling brand unveils a rival HDMI sync box for way less
Mozilla Firefox finally has native profile switching with latest update
Roku Channel is free, and you don’t need a Roku device to watch
Intel says ‘turbo cells’ will boost PC CPU and GPU speeds in 2027
 Intel Foundry Roadmap Update - New 18A-PT variant that enables 3D die stacking, 14A process node enablement

Intel's new CEO Lip Bu-Tan took to the stage at the company's Intel Foundry Direct 2025 event here in San Jose, California to outline the company's progress on its foundry initiative.

https://www.tomshardware.com/pc-components/cpus/intel-foundry-roadmap-update-new-18a-pt-variant-that-enables-3d-die-stacking-14a-process-node-enablement

 Silverstone's new PSU can power four RTX 5080 GPUs, or three RTX 5090 cards

Silverstone new Hela 2500Rz flagship PSU comes with quad 16-pin 12V-2x6 power connectors, and more than enough power to run four (or more) graphics cards simultaneously.

https://www.tomshardware.com/pc-components/power-supplies/silverstones-new-psu-can-power-four-rtx-5080-gpus-or-three-rtx-5090-cards

Samsung's 512GB Pro Plus microSD card hits an all-time low of $30

The Samsung 512GB Pro Plus microSD card has hit an all-time low price. You can pick one up

3d | Engadget
Borderlands 4 release date moves up to September 12

The ground has just shifted for anyone trying to figure out the exact release date for Grand Theft Auto 6 as 2K has altered plans for another game in its stable, Borderlands 4. The latest entry in Gearbox's series will arrive 11 days earlier than previously announced as it will debut on September 12.

After teasing a delay, Gearbox

3d | Engadget
How to use your iPhone as a webcam with your Mac

If you want to upgrade your video call setup without buying an external webcam, your iPhone can help. With macOS Ventura or later, Apple’s Continuity Camera feature allows users to turn their iPhone into a high-quality, wireless webcam for Mac. Whether you’re joining a meeting on Zoom, recording a presentation or creating content for YouTube, using your iPhone as a webcam can provide a sharper image, better low-light performance and useful extras like Center Stage and Desk View. Here’s how to

3d | Engadget
Meta’s ChatGPT competitor includes conversational voice chat and a social feed

Meta didn't wait for Tuesday's LlamaCon keynote to unveil its first big AI announcement of the week. The company launched a standalone app

3d | Engadget
Meta is making it easier to use Llama models for app development

Meta is releasing a new tool it hopes will encourage developers to use its family of Llama models for their next project. At its inaugural LlamaCon event in Menlo Park on Tuesday, the company announced the Llama API. Available as a limited free preview starting today, the tool gives developers a place to experiment with Meta's

3d | Engadget
In his first 100 days, Trump’s tariffs are already threatening the AI boom

When Donald Trump returned to the White House in 2025, many in the tech world hoped his promises to champion artificial intelligence and cut regulation would outweigh the risks of his famously volatile trade policies. But less than 100 days into his new term, it’s clear that Trump’s aggressive tariffs—and the global response to them—could pose a major threat to the

Open Up With Brad Frost, Episode 2

Brad Frost is running this new little podcast called Open Up. Folks write in with questions about the “other” side of web design and front-end development — not so much about tools and best practices as it is about …


Open Up With Brad Frost, Episode 2 originally published on

3d | CSS tricks
Ultimate Alexa Guide: 200+ Commands to Master Amazon Echo and New Alexa Plus

From setting timers to controlling your smart home, here's how Amazon's voice assistant has evolved with new features to make your life easier this spring season. https://www.cnet.com/home/smart-home/ultimate-alexa-guide-200-commands-to-master-amazon-echo-and-new-alexa-plus/#ftag=CADf328eec

3d | cnet.com
Two Technicians Share the 5 Worst Places to Put Your Wi-Fi Router

CNET shares the most common (and avoidable) mistakes people make when setting up equipment. But don't worry, there's an easy fix. https://www.cnet.com/home/internet/two-technicians-reveal-5-worst-places-to-put-your-wi-fi-router/#ftag=CADf328eec

3d | cnet.com
Best 4K Projector for 2025: Tested and Reviewed by Experts

Enjoy ultra-HD detail that takes full advantage of big screens for the ultimate home theater. These are some of the best projectors I've ever tested. https://www.cnet.com/tech/home-entertainment/best-4k-projector-for-2025-tested-and-reviewed-by-experts/#ftag=CADf328eec

3d | cnet.com
Amazon Prime Day Is Coming Back in July, With Tariffs Looming Large

Amazon's big annual sales event for Prime members could be dampened by price hikes on imported goods. What to look for. https://www.cnet.com/tech/amazon-prime-day-is-coming-back-in-july-with-tariffs-looming-large/#ftag=CADf328eec

3d | cnet.com
 NYT Strands hints and answers for Wednesday, April 30 (game #423)

Looking for NYT Strands answers and hints? Here's all you need to know to solve today's game, including the spangram.

https://www.techradar.com/computing/websites-apps/nyt-strands-today-answers-hints-30-april-2025

 NYT Connections hints and answers for Wednesday, April 30 (game #689)

Looking for NYT Connections answers and hints? Here's all you need to know to solve today's game, plus my commentary on the puzzles.

https://www.techradar.com/gaming/nyt-connections-today-answers-hints-30-april-2025

 HMRC launches £1 billion bid for new CRM system

The winning bid will enter into a 15-year contract with HMRC worth £1 billion, and SMEs are being encouraged to apply.

https://www.techradar.com/pro/hmrc-launches-gbp1-billion-bid-for-new-crm-system

 10 of the hottest gaming deals that beat Amazon's Gaming Week

Amazon's Gaming Week is home to countless awesome deals on accessories and hardware, but competing retailers have better prices on these select items.

https://www.windowscentral.com/hardware/gaming-week-anti-amazon-deals

LG’s super-fast 4K OLED gaming monitor is $400 off right now
Need to replace your PC at a reasonable price? Don’t wait—the window is closing
Samsung’s 512GB microSD card with USB adapter hits all-time low price
Gamers Nexus joins The Full Nerd podcast for tariff talk
Alienware’s newest 34-inch OLED gaming monitor is faster and cheaper
Avoid public USB charging stations. They could hack your phone
Google confirms child-friendly version of Gemini AI chatbot soon