The mixer is a row of inserts, each with a set of effect slots. Inserts have no New event: their events appear insert by insert, in mixer order. Each effect slot starts with a slot index event, and the plugin in the slot is described by the plugin events that follow.
FL Studio 9.0.0 raised the number of insert tracks to 99, “for a total of 105”, according to Image-Line’s changelog, so these versions have 105 inserts. PyFLP’s table of maximums, which it labels as estimates, gives 105 insert slots up to version 9.0 and 127 after it. Each insert has 10 effect slots.
Mixer
| ID | Size class | Name | Holds |
|---|---|---|---|
| 0x1D (29) | Byte | Plugin delay compensation | Whether automatic plugin delay compensation is on. |
| 0xE1 (225) | Data | Mixer parameters | Mixer settings, as a block of binary data. LMMS’s old importer divides insert volumes in this block by 100 for files from version 6.0 on. |
Inserts
| ID | Size class | Name | Holds |
|---|---|---|---|
| 0x5F (95) | Word | Insert icon | The insert’s icon. |
| 0x93 (147) | Dword | Insert output | The insert’s audio output. |
| 0x95 (149) | Dword | Insert colour | The insert’s colour, from FL Studio 4. |
| 0x9A (154) | Dword | Insert input | The insert’s audio input. |
| 0xCC (204) | Text | Insert name | The insert’s name, from FL Studio 3.5.4. |
| 0xEB (235) | Data | Insert routing | Which inserts this one sends to, as a block of binary data. |
| 0xEC (236) | Data | Insert flags | The insert’s switches, as a block of binary data. |
Slots
| ID | Size class | Name | Holds |
|---|---|---|---|
| 0x62 (98) | Word | Slot index | The effect slot within the insert that the following plugin events fill. |