Free Online Audio Utility with Multitrack Mixer and Opus/AMR Support

Hacker News

"Hi HN, I'm Mario, a full-stack developer. I built this 100% free, no-install web tool (using Python/FastAPI and FFmpeg) to simplify professional audio tasks for creators and small teams. I was frustrated by expensive, clunky desktop apps, so I focused on advanced features like a seamless multitrack mixer with crossfades, universal video-to-audio extraction (from URLs like YouTube), and robust conversion for challenging formats like WhatsApp OPUS/AMR. It's designed for efficiency in fast-paced production environments. Happy to answer any questions!"

Visit product View on Hacker NewsOct 24, 2025

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Actual performance

2points

Did not reach leaderboard

Launch Intel predictions

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Indie HackersFits the IH revenue-focused audience · Missing: supports, reddit linkedin, podcasting

74%74% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.

best fitHighest predicted score across all platforms for this description.

AppSumoMay struggle as an AppSumo deal · Missing: plus, platform, intuitive

49%49% predicted probability of success on AppSumo, based on ML models trained on real launch data.

TrustMRRLess likely to generate early MRR · Strong signals: apps, video · Missing: mobile apps, ios, personal

46%46% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

Product HuntUnlikely to reach the leaderboard · Strong signals: apps, tasks, using · Missing: mac, agents, macos

37%37% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

Hacker NewsMay not resonate with HN audience · Strong signals: ide, io · Missing: https docs, excited, just released

36%36% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue

14%14% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Strong signals: audio · Missing: web3, chat, crypto

0%0% predicted probability of success on BetaList, based on ML models trained on real launch data.

Correct prediction on native model

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