Guide
How to open tracker modules (XM, MOD, IT) in your browser
Play XM, MOD, IT, and S3M modules online without installing a tracker. How Filelathe’s in-browser libopenmpt player works.
Why browser playback helps
Tracker modules (.xm, .mod, .it, .s3m, and related formats) still show up in demoscene packs, game rips, and chiptune archives. Installing a desktop player is fine at home — less fine on a locked-down laptop or when you only need a 30-second listen.
Filelathe mounts a dedicated tracker player powered by libopenmpt in an AudioWorklet. You drop the file, wait for the worklet to load, then press Play.
Privacy
Module bytes are read in your browser tab for playback. They are not uploaded to a conversion farm just to hear the tune. Composing the window UI may call Filelathe’s API with file metadata; the audio path itself stays local.
Tips
Prefer opening the file from its real folder (Downloads, Documents). macOS Finder Recents sometimes hands the browser an empty or unreadable file stub.
If Play stays disabled, wait for “libopenmpt” to finish loading, or use Retry. A hard refresh helps after deploys that update the worklet assets.