Nintendo 3DS Sound
Nintendo 3DS Sound is the music playing and audio recording application that is included with all retail consoles.
It loads audio files from the sd card. It supports MP3 and AAC encoded audio files and supports m3u playlists.
Playlist file format
The application allows for user created playlists. They are stored on the SD card.
| Offset | Size | Description |
|---|---|---|
| 0x00 | 0x04 | Magic bytes, 'O', 'V', 'A', 'F' or "FAVO" endian corrected. |
| 0x04 | 0x04 | Always integer with value 16 |
| 0x08 | 0x04 | Seems static? |
| 0x0C | 0x04 | Zero Padding |
| 0x10 | 0x02 | checksum (songs?) |
| 0x12 | 0x02 | Icon ID (0-44) |
| 0x14 | 0x02 | Song file count |
| 0x16 | 0x02 | static(?) 2C 01 |
| 0x18 | 0x04 | some kind of timestamp, for encryption (dosn't change when editing) |
| 0x1A | 0x01 | checksum (icon?, header?) (dosn't change when editing) |
| 0x1B | 0x01 | checksum (name?) (dosn't change when editing) |
| 0x1C | 0x04 | always(?) integer with value 6 |
| 0x20 | 0x100 (avaiable 0x40) | Playlist name stored in UTF-16 |
| 0x120+(n*0x20C) => n<300 | 692 (0x20C per song) | File name stored in UTF-16. Repeats for the rest of the file. |
| 0x2672F | - | End |