What Are Synced Lyrics (and Why Are They Better)?
Standard lyrics embedded in an MP3 are just a block of plain text stored in the USLT (Unsynchronized Lyrics) ID3 tag. They display all at once as a static scroll — not very useful when you're trying to sing along.
Synchronized lyrics are stored in the SYLT (Synchronized Lyrics) ID3 tag. Each line (or even each word) has a precise timestamp attached, so your media player can highlight the current line in real time as the song plays, just like karaoke.
The result looks like this in Apple Music, VLC, Poweramp, or any player with lyrics support:
- Current lyric line is highlighted / enlarged
- Lines scroll automatically as the song progresses
- You can tap a line to jump to that position in the song
The Old Way: Manual LRC Files
Before AI, getting synced lyrics meant:
- Finding a lyrics website that offers .lrc files (timestamped lyric format)
- Downloading the LRC file
- Using software like Mp3tag or foobar2000 to import it manually
- Editing timestamps by hand if they were off
This was tedious and often required finding LRC files for each individual song — which don't always exist for less popular tracks.
The New Way: AI Transcription in One Click
MP3aud.io uses AI audio transcription (based on speech-to-text models) to actually listen to the song and generate lyrics with precise timestamps automatically. No LRC files. No manual matching. The AI does it all.
Step-by-Step: Embed Synced Lyrics in 3 Minutes
Navigate to mp3aud.io. No account or installation needed for basic use.
Drag your files directly into the large dropzone. You can drop multiple files at once for batch processing.
Find the Attach Lyrics toggle and enable it. This tells the system to run AI transcription on each file.
Hit the orange Process button. Processing time depends on file length — typically 1–2× the track duration for AI transcription. Progress is shown in real time.
Download your ZIP. The MP3 files inside now have synced lyrics embedded in their ID3 SYLT tag. Import them into Apple Music, add to VLC, or play them on your phone — the lyrics will scroll automatically.
Which Media Players Display Synced Lyrics?
Synced lyrics embedded in SYLT ID3 tags are supported by:
- Apple Music — displays synced lyrics natively on iPhone, iPad, Mac
- Poweramp (Android) — excellent synced lyrics support
- VLC Media Player — with lyrics plugin or via track info
- foobar2000 — with foo_uie_lyrics3 plugin
- Winamp — classic, but still works
- AIMP — full SYLT support built in
- Infuse (iOS/tvOS) — shows lyrics inline during playback
Can I Add Album Art at the Same Time?
Absolutely. MP3aud.io can handle both simultaneously. Just enable both Add Album Art & Tags and Attach Lyrics before clicking Process. Your downloaded files will have both cover art and synced lyrics embedded — plus your ID3 title/artist/album fields properly filled in from iTunes metadata.
Can I Also Boost the Audio Quality?
Yes. Enabling the Increase Bitrate (320k) toggle will also upsample your audio to 320kbps MP3 during the same processing pass. All three operations (album art, lyrics, bitrate) can run together in one go.
Frequently Asked Questions
Does Attach Lyrics work for non-English songs?
The AI transcription model supports dozens of languages including Spanish, French, German, Japanese, Korean, Portuguese, and more. Accuracy is highest for English, but results for other major languages are also generally good.
What if the lyrics are wrong?
You can manually edit the SYLT tag using desktop tools like Mp3tag or foobar2000 after downloading. Mp3tag in particular has good support for editing synchronized lyrics tags.
Does this work for FLAC, M4A, or WAV files?
Yes. MP3aud.io supports multiple audio formats. For FLAC and M4A files, lyrics are embedded in the appropriate tag format for that container (Vorbis COMMENT for FLAC, iTunes metadata for M4A).