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Feishin vs K-19 Player: catalog facts
Feishin	K-19 Player
Free The open-source application is available without a license fee.	Free Free and open source under GPL-3.0-only.
Windows, macOS, Linux	Android
Multiple playback backends and lyric display	Works with OpenSubsonic-compatible servers Includes background audio
Requires a supported music server.	Requires an OpenSubsonic-compatible music server
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.