Custom icons should be small square images (under 1MB each) — logos or profile-style icons work best.
Music Track
Most browsers block audio with sound from autoplaying until the visitor interacts with the page (a security/UX rule, not something this site controls). If blocked, playback will start on their first click/tap instead.
100%
Saved.
Note: the admin password is checked server-side (nothing to find via Inspect Element). Data is stored via your Cloudflare KV-backed API, with a localStorage fallback for offline/local preview.