AudioSTAX takes a folder of recordings, songs or videos and gives you back files that are all in the format you need and at the same loudness, ready for podcasts, streaming or broadcast. Everything happens on your computer: nothing is uploaded.

Batch conversion

• WAV (16/24/32-bit float), FLAC, MP3 (CBR/VBR), AAC (.m4a), Opus and OGG Vorbis
• From almost any audio format and from the soundtrack of MP4, MOV, MKV, WebM and AVI videos
• Drag files or whole folders, hundreds at a time; several files in parallel on all your cores

Loudness in LUFS

• Two-pass EBU R128 normalization: one precise gain that keeps your dynamics, with a true-peak ceiling
• Presets for podcasts (-16), streaming (-14) and broadcast (-23), or your own values
• Waveform and measured loudness of every file before you convert

Speech cleanup and subtitles

• AI noise reduction (DeepFilterNet) for fans, traffic and noisy rooms; a light mode for faint hiss
• Automatic removal of 50/60 Hz mains hum and a leveler that evens out quiet and loud voices
• Subtitles and transcripts with Whisper: SRT, VTT, TXT and JSON next to every file, language detected automatically

Tags, cover art and file names

• Write artist, album, year or genre into every file at once; title from the file name, track numbers in queue order
• Keep, replace or remove the cover art (MP3, FLAC, AAC)
• File names from variables, find-and-replace rules and letter case, with a live preview of the final names

Private by design

• No account, no ads, no tracking: your audio never leaves the computer. The AI models are downloaded only when you ask for them
• Free, in English, Italian, German, French and Spanish, with a complete built-in guide

AudioSTAX opens files in your home folder and on removable drives (/media, /run/media; connect removable-media if it is not connected).