HiFi Streamer by BlackSails.com

HiFiStreamer is not just another basic web music player. It is a dedicated high-fidelity audio engine built directly into Firefox. It uses modern browser APIs to keep playback persistent and unthrottled while you work in other tabs or leave the dashboard in the background.

Key Features:

Lossless local playback: Stream FLAC, WAV, M4A, OGG, and high-bitrate MP3s from local folders you choose. Playback stays in the browser — no extra app and no cloud upload.

Plex servers: Connect to multiple Plex servers and stream remote libraries with the same high-fidelity engine.

Always-on audio engine: A persistent background audio page keeps the pipeline awake and in sync. That means true gapless playback and custom gain-node crossfading even after you close the dashboard.

Native metadata parsing: Reads ID3 and FLAC headers locally at the bit level. No cloud dependency.

Customization and integrations: Optional Last.fm scrobbling, hardware media keys, a graphic equalizer, ReplayGain, dynamic themes, and flexible queue management.

Drag and drop: Queue local folders and Plex libraries together. Drag files and folders from your desktop — or from a web page — into the same queue.

Privacy first: No analytics, no tracking scripts, and no required data collection. The extension is self-contained. Last.fm only runs if you connect an account. Settings includes a fixed, non-animated 468x60 banner in the footer.

Keep your data local and your audio pristine.