Yes. You can change the Merge FX settings in rekordbox.

Change the Merge FX settings when your computer is connected to the DDJ-FLX6.

To turn on/off or change the settings of Merge FX without connecting the DDJ-FLX6, you’ll need to take out one of the relevant rekordbox subscription plans.

You’ll also need to mark the [Enable MERGE FX] check box in the [Preferences] > [Controller] > [Effect] tab in rekordbox.

You can change the Merge FX settings as follows:

For details, refer to [rekordbox] > [Changing the Merge FX settings] in the Instruction Manual.

You can read the Instruction Manual [here].

1. Open the [Effect] panel in rekordbox.
2. Click the gear icon shown on the right side of the [MFX] panel in the [Effect] panel to display the [MERGE FX Settings] screen.
3. Select a preset from the [PRESET] pull-down menu.
4. Select an item for [BUILD FX], [BUILD SAMPLE], [RELEASE FX], or [DROP SAMPLE] from the relevant pull-down menu.

- If you select a different preset, [CUSTOM] is displayed after the preset name.

- If you click the [RESET] button after changing a preset, the preset returns to the default.

・You need to select the sample sound when you make the following settings. Click the [?] icon to select the sample sound (you need to load the sample sound into the sampler slot before you do this).

　[BUILD SAMPLE] ＞ [REPEAT SAMPLE]

　[BUILD SAMPLE] ＞ [REPEAT UP SAMPLE]

　[DROP SAMPLE] ＞ [SAMPLER]