If you're using the Web DJ Pro Menu, you'll see a massive 12-slot Cart Machine (also known as a Soundboard) located on the right-hand side beneath your playlist queue.
Slots 1-8 are pre-loaded by YonaCast with industry-standard royalty-free sound effects out of the box (like airhorns, drumrolls, or applause). Clicking these buttons instantly overlays the sound perfectly on top of your main mix.
Slots 9-12 are fully custom User Slots. You can drag and drop your own MP3 files directly into these boxes directly from your computer! This is the perfect place to drop your station's signature DJ Drop or Jingle. The system saves these securely, so they will be permanently mapped to your soundboard the next time you log in.