Free online AU-to-FLAC converter — upload a AU file and download a FLAC. Fast, private, no signup.
Drop your AU file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a FLAC to download. No software to install.
Yes. Convert AU to FLAC for free right in your browser, with no account needed to get started.
Your file is transferred over an encrypted connection and anonymous uploads are temporary. You can also view and strip metadata (location, device, author) before you download.
Sun/NeXT AU — a simple, long-lived PCM audio container. Free Lossless Audio Codec.
Convert AU to: MP3 · WAV · M4A · AAC · AC3 · AIFF · CAF · DTS · M4B · M4R
Convert to FLAC from: AAC · AC3 · AIFF · AMR · APE · CAF · DFF · DSF · DTS · M4A