# Sample MP3 audio files for testing, free, CC0 and hotlinkable 7 MP3 test files from 48.8 KB to 10 MB: L/R channels, ID3v2 tags, digital silence, 440 Hz sine, seeking and scrubbing. Direct URLs, SHA-256 per file, CC0. The page: . `mp3/sine-440hz-3s.mp3` is the baseline, 128 kbps stereo at 48 kHz, and its measured 3,024 ms are three seconds plus the padding MP3 adds to fill whole frames, which a duration check that expects exactly three seconds gets wrong. `mp3/stereo-lr-5s.mp3` measures 440 Hz in the left channel and 880 Hz in the right, so a pipeline that swaps or downmixes channels changes which tone comes out where. `mp3/silence-5s.mp3` is a valid MP3 with no tone in either channel, for code that treats silence as a failed decode. `mp3/with-id3v2-tags-3s.mp3` carries ID3v2 tags and a 100x100 PNG cover, which ffprobe reports as a video stream: an upload validator that refuses audio with a video stream refuses an ordinary tagged MP3. `mp3/sine-440hz-30s.mp3` runs 30,024 ms, long enough to test seeking and scrubbing. `mp3/1mb.mp3` is 996,116 bytes at a constant 128 kbps, so its 62,232 ms follow from its size. `mp3/10mb.mp3` is 9,950,996 bytes and 621,912 ms of the same stream, for upload limits and players that must stream rather than load. ## Files | Path | Size | MIME | Properties | |---|---|---|---| | [`mp3/10mb.mp3`](https://loremfile.dev/mp3/10mb.mp3) | 10 MB (9,950,996 bytes) | `audio/mpeg` | 621.912 s, mp3, 48 kHz, 2 channels | | [`mp3/1mb.mp3`](https://loremfile.dev/mp3/1mb.mp3) | 996.1 KB (996,116 bytes) | `audio/mpeg` | 62.232 s, mp3, 48 kHz, 2 channels | | [`mp3/silence-5s.mp3`](https://loremfile.dev/mp3/silence-5s.mp3) | 81 KB (81,044 bytes) | `audio/mpeg` | 5.04 s, mp3, 48 kHz, 2 channels | | [`mp3/sine-440hz-30s.mp3`](https://loremfile.dev/mp3/sine-440hz-30s.mp3) | 480.8 KB (480,788 bytes) | `audio/mpeg` | 30.024 s, mp3, 48 kHz, 2 channels | | [`mp3/sine-440hz-3s.mp3`](https://loremfile.dev/mp3/sine-440hz-3s.mp3) | 48.8 KB (48,788 bytes) | `audio/mpeg` | 3.024 s, mp3, 48 kHz, 2 channels | | [`mp3/stereo-lr-5s.mp3`](https://loremfile.dev/mp3/stereo-lr-5s.mp3) | 81 KB (81,044 bytes) | `audio/mpeg` | 5.04 s, mp3, 48 kHz, 2 channels | | [`mp3/with-id3v2-tags-3s.mp3`](https://loremfile.dev/mp3/with-id3v2-tags-3s.mp3) | 51.5 KB (51,480 bytes) | `audio/mpeg` | 100x100, 3.024 s, png, mp3, 48 kHz, 2 channels | The same list as JSON: .