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There are numerous audio formats, but some of the most common ones include:

1. WAV (Waveform Audio File Format): This is a raw audio format developed by Microsoft and IBM. It’s uncompressed, which means it takes up a lot of space but maintains high audio quality.

2. MP3 (Moving Picture Experts Group, Audio Layer 3): This is a common compressed audio format that trades off some audio quality for smaller file size. It’s widely used for music files.

3. WMA (Windows Media Audio): This is a compressed audio format developed by Microsoft. It’s similar to MP3 but often has better compression capabilities.

4. AAC (Advanced Audio Coding): This is a compressed audio format developed by Dolby. It’s the standard audio format for Apple’s iTunes Store.

5. FLAC (Free Lossless