XSMM local MP3 recorder: library notice, source and relinking materials
2026-10-24. This directory is distributed alongside the optional local MP3 codec.

The MP3 encoder uses LAME through wasm-media-encoders 0.7.0. LAME is covered by the GNU Library General Public License version 2 (its public header permits version2 or later); see LAME-LGPL-2.txt and the complete LAME source archive, including original copyright notices. The JavaScript wrapper is Copyright(c)2020-2024 arseneyr, MIT; that license does NOT replace LAME's license.

Original LAME engine notices from libmp3lame/lame.c:
Copyright(c)1999-2000 Mark Taylor; Copyright(c)2000-2005 Takehiro Tominaga;
Copyright(c)2000-2017 Robert Hegemann; Copyright(c)2000-2005 Gabriel Bouvigne;
Copyright(c)2000-2004 Alexander Leidinger.
The public interface include/lame.h states Copyright(c)1999 Mark Taylor.
Additional individual copyright/license notices are preserved in the complete source archive; this list does not replace them. LAME is provided WITHOUT ANY WARRANTY; see its original license and source notices.

Download from this same directory:
- README.txt — exact build/replacement instructions and verified/unverified limits.
- lame-source-98db548.tar.gz — complete pinned LAME source/COPYING.
- wrapper-source-4a45333.zip — pinned wrapper/bridge/build source, excluding tool binary cache.
- upstream-source-provenance.json — immutable upstream commits/Git blobs.
- encoder-object.mjs and original.wasm — MP3-only standalone machine-readable wrapper object and original library bytes.
- relink.py and verify-relink.mjs — offline replacement/verification utilities.
- XSMM-RELINK-PERMISSION.txt — narrow own-use/relink/debug permissions; other XSMM rights reserved.
- manifest.json — exact distribution fileSHA256/size and verification state.
- xsmm-mp3-relink-kit-20261024.zip — retained release kit including final isolated application sources/objects when release gate is complete.
- xsmm-mp3-relink-kit-20261024.zip.sha256 — checksum of that exact dated archive.

Other original notices: wasm-media-encoders-MIT.txt, swc-helpers-Apache-2.0.txt, tslib-0BSD.txt, tslib-CopyrightNotice.txt; Emscripten-2.0.8-LICENSE.txt, musl-COPYRIGHT.txt and compiler-rt-LICENSE.txt describe the pinned toolchain/runtime terms. Some are conservative notices for potential runtime components; this does not assert every component is present in the MP3-only object.

Sources/build: wrapper commit4a45333baadbab312d1cc0911151dfad23157c51, LAME commit98db548e8e851defbba3184125ce10725355c332, upstream Emscripten2.0.8. The original132999-byte WASM SHA256 is85e81719250b9a667b1258143f689dda70e3e57a7e7c29ab0b4cef65c8f6eb9a.

The Library and use of it are covered by the supplied LibraryGPL. You may modify/relink the supplied work for your own use and reverse engineer it to debug those modifications; see XSMM-RELINK-PERMISSION.txt. Third-party license rights remain unchanged. No general relicensing of XSMM occurs.

We supply retained machine-readable source and relink materials directly, not only an upstream link or a future source offer. The source-to-WASM build with the historical toolchain was NOT performed here; binary reproducibility is NOT claimed. Relinking a valid modified WASM is a separate test and does not establish that rebuild. See README and manifest for achieved checks and remaining release gates. This notice is an engineering delivery record, not a legal opinion or certification.

Primary license references (original texts are supplied locally):
https://www.gnu.org/licenses/old-licenses/lgpl-2.0.html (sections4–6)
https://www.gnu.org/licenses/gpl-faq.en.html#LGPLStaticVsDynamic