Grabs whatever's playing out of this machine's speakers (a browser tab, Suno, anything)
and saves it as a real audio file. No install, no upload — everything happens in this tab.
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Click to start, then pick the tab/screen that's playing your audio.
How it works: hit the button, then in the browser's share picker choose the tab/window/screen
that's making the sound and make sure "Share tab audio" (or "Share system audio") is ticked —
that's the part that actually grabs the sound. Works in Chrome/Edge; Safari and Firefox don't support
capturing tab audio this way — use Audacity there instead (it's installed on this box already).