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  2. FLAC to AU
1CONVERTER Media Team - 1CONVERTER Team Logo
1CONVERTER Media Team·Audio & Video Specialists·Updated Mar 15, 2026
Official
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How FLAC to AU Conversion Works

Converting FLAC files to AU format allows you to open, share, and use your content in applications that support AU but not FLAC. FLAC and AU differ in their internal data structure, compression method, and software ecosystem. The conversion process reads the binary or text content of the source FLAC file, transforms the data into the AU encoding scheme, and writes the result as a new file. Where possible, metadata such as creation date, author, and embedded colour profiles is preserved in the output. Quality and fidelity depend on how closely the two formats share structural features — conversions between formats in the same category (e.g., two image formats or two document formats) generally preserve content more completely than cross-category conversions. 1converter processes FLAC-to-AU conversions server-side: files are uploaded over HTTPS, converted on secure cloud infrastructure, and the output is ready to download within seconds. Converted files are automatically deleted after 24 hours.

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Frequently Asked Questions

Everything you need to know about converting FLAC to AU

Absolutely. All uploads are encrypted with SSL/TLS, processed on secure servers, and automatically deleted within 24 hours. We never share or access your files.
Most FLAC to AU conversions complete in under 30 seconds. Larger or more complex files may take 1-2 minutes depending on file size and settings.
Yes! Our batch conversion feature lets you upload and convert multiple FLAC files to AU simultaneously, saving you significant time.
Free users can convert FLAC files up to 10 MB. Pro plan supports up to 200 MB, and Business plan supports up to 500 MB per file.
Your original FLAC file and the converted AU file are automatically deleted from our servers within 24 hours for your privacy and security.
FLAC (Free Lossless Audio Codec) is An open lossless audio compression format. It was introduced in 2001 by Josh Coalson.

Still Have Questions?

Our support team is here to help you with any questions about FLAC to AU conversion.

Contact SupportView All FAQs

FLAC to AUConverter — Fast & Free Online

Convert FLAC files to AU format effortlessly. High-quality FLAC to AU conversion tool trusted by millions.

FromFLACToAU
Convert FLAC to AU Now
check_circle100% Free
shield_lockedSecure & Private
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verifiedNo Registration

How to Convert FLAC to AU

Follow these simple steps to convert your FLAC files to AU format in seconds

1

Step 1

Upload your FLAC file

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2

Step 2

Choose AU as output format

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3

Step 3

Adjust quality and conversion settings if needed

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4

Step 4

Click Convert to process your file

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5

Step 5

Download your converted AU file

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Average conversion time: Less than 2 minutes

Visual Conversion Preview

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flac

Source file

Size:2.4 MB
Format:FLAC
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Converting...

~5s

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au

Output file

Size:0.7 MB
Saved:-69%
69%
Size Reduction
5s
Processing Time
95%+
Quality Retained

This visualization shows the typical conversion process from FLAC to AU format, including expected size reduction and quality retention.

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Choose Your Conversion Quality

Select the perfect balance between quality and file size for your FLAC to AU conversion

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conversionPage.qualityLow

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File Size:conversionPage.fileSizeVerySmall
Speed:conversionPage.speedVeryFast
Quality Level
Recommended
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conversionPage.qualityMedium

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File Size:conversionPage.fileSizeMedium
Speed:conversionPage.speedFast
Quality Level
target

conversionPage.qualityHigh

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File Size:conversionPage.fileSizeLarge
Speed:conversionPage.speedModerate
Quality Level
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conversionPage.qualityMaximum

conversionPage.qualityMaximumDesc

File Size:conversionPage.fileSizeVeryLarge
Speed:conversionPage.speedSlow
Quality Level

tips_and_updatesQuality Selection Tips

When to use Low/Medium:

  • •Web uploads and social media sharing
  • •Email attachments with size limits
  • •Quick previews and thumbnails

When to use High/Maximum:

  • •Professional printing and publishing
  • •Archive and long-term storage
  • •When quality is more important than size

Audio Tip: For music, High quality (320kbps) is recommended. Medium quality works well for podcasts and voice recordings.

Why Convert FLAC to AU?

Discover the advantages of converting your FLAC files to AU format

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AU compatible with all music players

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Crystal-clear AU audio output

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FLAC offers open source

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Maintain FLAC audio fidelity

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Preserve metadata and album art

Additional Features

243+
Supported Formats
<2 min
Average Time
24/7
Available
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Popular Use Cases

See how professionals use our FLAC to AU converter in real-world scenarios

1

Audiophile listening with AU output

Convert FLAC to AU for this purpose quickly and easily.

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2

Music library in AU format

Convert FLAC to AU for this purpose quickly and easily.

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3

Podcast publishing from FLAC recordings

Convert FLAC to AU for this purpose quickly and easily.

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4

Ringtone creation from FLAC

Convert FLAC to AU for this purpose quickly and easily.

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5

Voice recordings saved as AU

Convert FLAC to AU for this purpose quickly and easily.

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Trusted by Professionals In

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Can't Find Your Conversion?

We support 243+ file formats. Browse our complete list of conversions or start converting now!

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