leadme.html.Accepted forms: full showtease.php?id=... URL (with optional &p= or &key=), or just the numeric tease ID.
The downloader writes a <Title> by <Author>.eos.json file plus a media subfolder of the same name. Point leadme.html at the same parent folder to play it.
Default 1.0 s matches the Python downloader's setting. Lower = faster but heavier on Milovana's servers; some servers may also start dropping requests under load.