How to Use the Ongaku Anime Radio Player and Its Keyboard Shortcuts

Ongaku (ongaku.js.org) is a browser-based anime radio player: open the site, pick a category such as Opening, Ending, or OST, and playback starts in the page. The keyboard is the main control surface — SPACE pauses or resumes, N skips to the next track, R replays the current one, L goes back a track, F toggles fullscreen, and the arrow keys handle volume and seeking. No account or install is required to reach the player; the site presents itself as a radio-style stream of anime music rather than an on-demand library.

Getting started

1. Open ongaku.js.org in a desktop browser. The player loads directly in the page — there is no sign-up step described on the site.
2. Choose what you want to hear from the category options shown in the interface: Opening, Ending, OST, or Favorites.
3. Playback begins from that selection. From then on, you can drive everything from the keyboard without touching the mouse.

Because it behaves like a radio stream, you generally don't search for a specific song and queue it — you pick a category and let it run, skipping with N when a track isn't what you want.

Keyboard shortcuts

These are the controls listed on the page:

A few practical notes on how these behave:

• Volume steps are fixed at 10%. Two presses of UP is +20%; there's no fine-grained slider via keyboard, so use the on-screen control if you need something between steps.
• Seeking moves in 10-second jumps. LEFT and RIGHT are useful for skipping an intro or replaying a section, but you can't scrub to an exact timestamp with the keyboard alone.
• R vs. L. R restarts the track you're on; L moves you back to the previous one. If you just want to hear the current song from the top, use R.
• F is a display toggle only. It changes the view, not playback.

Interface options explained

• Preferences — the settings area of the player. This is where you'd adjust how the player behaves rather than what's playing.
• Opening / Ending / OST — the three content categories: anime opening themes, ending themes, and original soundtracks. Selecting one filters what the radio plays.
• Favorites — your saved tracks. Tracks you've marked appear here as a separate listening pool.
• Only Star — narrows playback to starred (favorited) tracks only, so the radio plays just the songs you've marked instead of the full category.
• Fork — a link to the project's source repository, i.e. the code behind the player rather than a playback feature.

Common snags

• Shortcuts don't respond. Keyboard control assumes the player has focus. Click once inside the page first, then try SPACE or N again.
• You expected a search box. Ongaku is organized around categories and favorites, not track search — if a specific song isn't in the current category, skip with N or switch categories.
• Favorites look empty. The Favorites and Only Star views only show tracks you've marked yourself; a fresh visit has nothing saved there yet.
• Fullscreen looks different from the normal view. F only changes the display; playback and shortcuts keep working the same way.

When this fits your setup

Ongaku suits background listening while you work or browse — pick Opening, Ending, or OST, then steer with the keyboard and leave the tab alone. If you need to find one specific song, build a queue, or keep a persistent library across devices, a category-based radio player is the wrong tool; use it for what it is, a lightweight stream with fast keyboard control.