Official comment
In EXPORT mode,
only audio input from external equipment can be recorded.
（To record of Master Out of rekordbox, please use recording function in PERFORMANCE mode.）
Please check the followings:
・Is the version of rekordbox 4.2.1 or later?
・Is your computer connected to external equipment via a USB cable?
・Open [Preferences] > [Audio] > [Audio] to check external equipment is selected from the menu.
・Open [Preferences] > [Audio] > [Input channels] > [Input Record] to check external equipment is selected correctly from the menu.
→ When using a DJM as external equipment, click the [Setting Utility] to open the Setting Utility window. Select [MIXER OUTPUT] tab and select mixer audio output for each channel.
・Check if the volume of recording is zero or not?
Adjust the volume by turning the level knob while checking the level meters.
・Check if the disk has enough space to save the recorded files.
・Check if destination of the recorded files is correctly selected.
Open [Preferences] > [Advanced] > [Recordings] > [Recordings] and check [Location of Files].
In PERFORMANCE mode,
you can record Master Out of rekordbox or input audio from Pioneer DJ products.
（When you are to record input audio from equipment other than Pioneer DJ products, use recording function in EXPORT mode.）
[Check the followings]
In case no equipment is connected or equipment other than Pioneer DJ products is connected:
Check the following two settings.
・Open [Preferences] > [Audio] > [Audio] and check if a computer built-in speaker is selected.
・Open [Preferences] > [Audio] > [Mixer Mode] and check if "Internal" is selected.
In case a Pioneer DJ product is connected:
・Open [Preferences] > [Audio] > [Input channels] > [Input Record]. Check if the channel of the connected Pioneer DJ product is selected correctly.
→If you use DJM, DDJ-SZ, DDJ-RZ, DDJ-RZX as external equipment, click the [Setting Utility] button to open the Setting Utility window. Select the [MIXER OUTPUT] tub and select mixer audio output for each channel.
・Check if the volume of recording is zero or not.
Adjust the volume by turning the level knob while checking the level meters.
・Check if the disk has enough space to save the recorded files.
・Check if destination of the recorded files is correctly selected.
Open [Preferences] > [Controller] > [Recordings] > [Recordings] and check [Location of Files].
