Changes songs that are already in your osu!lazer or osu! stable library, in place, without changing their speed. The original audio is backed up and can be put back at any time. This part needs a small helper app on Windows. For single maps, use the Beatmap files tab instead.
Download helper (.zip, Windows)Only needed once. Run these in PowerShell or Windows Terminal. If you only play osu! stable, ffmpeg is enough.
winget install Gyan.FFmpegwinget install Microsoft.DotNet.Runtime.8Leave its window open while you use this page.
It connects on its own and lists your songs.
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