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EdnunpandClaude Opus 4.8 2fb9274a95 v5.2: stability and polish — deep-audit bug fixes + install-flow fixes

Verified findings from a multi-dimension code audit, plus the two install-flow bugs:
- Fix Opus encoder use-after-free on a codec/rate change while streaming (guard swap vs encode).
- Fix "both" single-file recording dropping audio + drifting (drain both directions in lockstep).
- Fix broken clip counter, UPnP teardown on exit, auto-update-restart foreground grant, and a
  malformed-Opus-format packet orphaning a playout session forever.
- Post-install relaunch now respects start-minimised; uninstall is path-aware so it won't clear a
  different copy's run-at-startup.
- Perf/hygiene: cache AppConfig off UI hot paths, fold per-peer EQ+gain into one pass, deterministic
  disposal (tray menu, timers, COM shortcut, Process handles, process meter), ring-buffer overflow
  guard, receiver session-lock fix, remote-control allow-list moved onto the UI thread.
- Remove dead code (two IsAsioBackend, SessionPlayout.Reset, IsSameEndpoint, RemSoundUpdater
  IDisposable); several stale-doc fixes.

Deferred (not in this release): drift-estimator tweak, peer-discovery pruning, uninstall retry-loop,
encryption nonce. Wire format unchanged (interops v3.3-v5.1). Version -> 5.2.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-09 20:54:53 +01:00

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RemSound v5.2

A stability and polish release. No new features — this one is bug fixes and internal tidy-ups from a deep code review, so it should just feel a bit more solid.

Fixes you might notice

Changing the codec or send rate while streaming could, in rare cases, crash RemSound with no warning. Fixed.
Recording "both sent and received" into a single file could lose small amounts of audio and drift out of sync over a long session. It now stays sample-accurate for the whole recording.
After installing, RemSound now honours your "start minimised" setting on the first relaunch (and still comes to the front when you're not starting minimised).
Uninstalling one copy no longer switches off a different copy's "run at startup".
Starting a split "received only" recording with no peers connected now tells you clearly, instead of quietly making an empty folder.
The clipping indicator in the diagnostics works again.

Under the hood

The automatic-update restart now brings the window to the front, the same way the installer does.
The router port opened by UPnP is properly removed when you close RemSound.
Lighter on memory and disk — fewer background file reads while you work, and tidier release of resources when the window closes or switches profiles.

Compatibility

Nothing about the over-the-network format changed, so v5.2 talks to v3.3 through v5.1 with no trouble — you don't have to update both ends at once. (Everyone still needs v3.3 or newer, where end-to-end encryption came in.)

Install

Download RemSound-v5.2.zip from this release.
Close RemSound.
Extract the zip over your existing RemSound folder, overwriting program files when prompted. The zip is program files only — it won't touch your settings, profiles, logs or recordings.
Run RemSound.exe.

Upgrading

From v3.6 or newer: Help → Check for updates installs v5.2 with the in-app updater — and if it can't finish, it puts your old version back exactly as it was.

From v1.9–v3.5: Check for updates works, but uses your current version's older updater for this one hop. If auto-update has been failing on your machine, install by hand using the steps above.

v1.8 and earlier: the auto-updater in those versions can't install updates — install by hand using the steps above.

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