Online Audio Player | formatter.org

How to listen

Add one or more audio files. For raw PCM, check the parameters and confirm; ordinary audio is detected automatically.

Use Play, the position slider or a waveform click to listen. Position inputs accept seconds or HH:MM:SS with decimals.

Set A and B to repeat a passage, choose a channel, or download WAV. Switching to another PCM file requires confirmation again.

The waveform is a playback overview, not an editor. A/B positions control looping without changing the source. When focus is outside controls, Space toggles playback and the arrow keys move five seconds. Use Audio Editor for cutting or effects.

Frequently asked questions

Which audio files can I open?

Play local audio, build a playlist and repeat a selected section. MP3, WAV, FLAC, M4A, AAC, OGG, Opus, AIFF and WMA can be imported; files your browser cannot play directly are prepared locally when supported. Raw PCM requires explicit parameters.

Can the filename automatically confirm PCM parameters?

No. Filename hints and saved settings only prefill values. Confirm the sample rate, encoding, channels, byte order and layout yourself. Changing the file or these parameters stops playback and requires confirmation again. WAV headers are read automatically.

Are my audio files uploaded?

Playback, PCM interpretation and WAV downloads run in your browser. Your audio files are not uploaded to a server.

Can I resume listening after reopening the page?

The browser remembers positions for recent files on this device. Add the same file again to restore its position. Files themselves are not saved, and raw PCM still requires parameter confirmation.

Can I play long recordings?

Raw PCM is read in chunks. Directly playable files do not require full decoding before playback. Some long files show only a timeline; compatibility conversion and WAV downloads still depend on available device memory.