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Free M4a to MP3 Converter vs LameXP: catalog facts
Free M4a to MP3 Converter	LameXP
Free Freeware with no charge.	Free Free and open source under the GNU GPL.
Windows	Windows
Handles M4b audiobooks and other rarer MPEG-4 audio formats Converts whole folders including subfolders	Encodes to MP3, AAC, Ogg Vorbis, Opus and FLAC Multi-threaded batch processing
Windows only Output limited to MP3 and WAV	Linux only through Wine Some antivirus programs falsely flag the downloads
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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