Psysonic v1.34.2

[Psychotoxical]

Added

• M4A / ALAC / AAC-LC support (closes #51): Apple Lossless (ALAC) and AAC-LC files in M4A containers are now decoded natively by the Rust audio engine (Symphonia) without requiring server-side transcoding.

• Per-server music folder filter (PR #125 by @cucadmuh): Users with multiple music libraries on their Navidrome server can now scope browsing to a single folder. A dropdown in the sidebar (visible only when more than one library exists) lets you pick a folder or switch back to "All Libraries". The selection is persisted per server and automatically resets to "All" if the selected folder is no longer available.

• Hi-Res / Bit-Perfect Playback (Alpha): New opt-in toggle in Settings → Playback. When enabled, the audio output stream is re-opened at the file's native sample rate (e.g. 88.2 kHz, 96 kHz) — bypassing rodio's internal resampler for a bit-perfect signal path. Disabled by default (safe 44.1 kHz mode). Includes ALSA/PipeWire underrun hardening: scaled quantum size, 500 ms sink pre-fill at high rates, and scheduler priority escalation only when needed.

• Hot Playback Cache (Alpha, PR #123 by @cucadmuh): Configurable on-disk prefetch cache for the next track in the queue. Reduces playback latency on slow or metered connections. Toggle and directory can be configured in Settings → Storage.

Changed

• Fullscreen Player — info block reworked: The track title is now the dominant element (large, bold, accent color) and sits above the artist name (small, muted). Matches community feedback on visual hierarchy.

• Fullscreen lyrics — line wrapping: Long lyric lines now wrap onto a second line instead of being truncated. Slot height increased from 3.6 vh to 6 vh to accommodate two-line entries without breaking rail positioning.

• Update notifications: Removed the Tauri auto-updater (in-app download and install). The app now shows a simple dismissible toast when a newer version is detected on GitHub, with direct links to the GitHub Releases page and the Psysonic website. No signing keys, no update manifests.

Fixed

• Standard mode CPU usage: Playing a 44.1 kHz MP3 with Hi-Res disabled no longer triggers an unnecessary audio device re-open on every track start. MSS read-ahead buffer reduced from 4 MB to 512 KB for standard-rate files. Background prefetch is now throttled by 8 s to avoid competing with playback startup. Combined, these changes reduce idle CPU from ~6–10 % to ~2–3 % on a modern machine.

• Hi-Res toggle — stream rate not restored: Toggling Hi-Res off while a track was playing at 88.2 or 96 kHz left the output stream at the high rate for subsequent tracks. The device's default rate is now restored on the next play.

• Fullscreen lyrics — CPU spikes on line transitions: Animating font-weight in CSS triggered a full layout reflow on every animation frame. Removed font-weight from the transition list; active-line emphasis now uses transform: scaleX(1.015) (compositor-only). Added contain: layout style to the overlay to isolate reflows from the rest of the page.

i18n

• New keys for Hi-Res playback settings and music folder filter added to all 7 languages (EN, DE, FR, NL, ZH, NB, RU).

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This discussion was created from the release Psysonic v1.34.2.