System Settings - Audio (ASIO4ALL)

The FL Studio installation includes FL Studio ASIO and 3rd party ASIO driver ASIO4ALL. There are two advantages of ASIO:

NOTE: ASIO4ALL is a generic ASIO driver that works with most audio interfaces, your experience may be different, including long periods of silence and head-scratching. If ASIO4ALL doesn't produce any sound we recommend that you work through all the steps below including the Troubleshooting section OR use the FL Studio ASIO driver.

Using the ASIO4ALL Advanced Settings

This section explains how to use the ASIO4ALL settings. To see a video tutorial Click here.

  1. Press F10 on your PC keyboard and select the Audio settings by clicking on the speaker icon. Alternatively choose Audio settings from the Options Menu.
  2. Select ASIO4ALL v2 as shown below.

  3. To open the ASIO4ALL settings - Click on the 'Show ASIO panel' (shown above). The screenshot below shows ASIO4ALL in 'simple mode'. The 'spanner' button, on the lower-right, changes between 'simple' and 'advanced' modes.

  4. ASIO Buffer Size - As shown above, the ASIO4ALL window allows you to adjust the ASIO Buffer Size (Buffer length) settings to fine-tune Buffer underrun issues. You can adjust the buffer length for each selected device (in this case the Creative SB X-Fi is selected, highlighted dark-blue). It is a good idea to set all devices you plan to use to the same Buffer Size. Select each device by clicking on the name so it becomes highlighted and then change the Buffer Size slider. The Buffer Size is displayed in samples, to convert from samples to milliseconds (ms) divide the Buffer length in samples by 44.1 (if your audio interface is using 44100 Hz) or 48 (if it is at 48,000 Hz). In this case, the audio interface is set to 44100 Hz so the Buffer length of 448 samples = 10 ms (approximately).
  5. WDM Device List - The screenshot also shows 2 devices in the WDM Device List (Creative SB X-Fi and Plantronics Headset). The devices that appear in your list will probably be different and are those audio devices that have audio interface drivers correctly installed and registered with the Windows operating system. If your sound is working correctly under Windows, there should be at least one device listed (something with Realtek or AC97 in the title are common for motherboard-based audio interfaces). If nothing is showing in this list, re-install the audio interface drivers for your PC, reboot and look here again.
  6. Advanced settings - Make sure you are in Advanced mode as shown below. Click the Spanner (lower-right) to change between 'Simple' and 'Advanced' modes.

  7. Active devices - Only active devices (and their active Inputs/Outputs) can be used by FL Studio, i.e show in the Mixer IN and OUT menus. This is the step that is required to use a USB microphone with your audio interface. To activate a device click the button in front of the device name, the blue button & arrow will light to indicate the device is active. You must also ensure that the device's Inputs (In:) and Outputs (Out:) are also activated. Click on any [+] squares in front of the device to expand the list of Inputs and Outputs and click on the activate buttons. NOTE: activating a device at the highest level does not necessarily mean its inputs and outputs are activated. For example, in the screenshot above the Plantronics Headset Output is not activated and so won't be available in FL Studio.
  8. Latency compensation In/Out - sliders. Leave these at the default settings. The ASIO4ALL driver reports to FL Studio the latency it adds to the audio stream, and this is taken into account by the program where appropriate. However, if you have measured the input/output latency of your audio interface using a loop-back cable, and know what you are doing, then set the 'Latency compensation' sliders according to your measured results.
  9. Use hardware Buffer - Can reduce Buffer underruns. Whether or not it helps will depend on the design of your audio interface's design and drivers.
  10. Always resample 44.1 kHz <-> 48 kHz - This option fixes a no sound issue on SigmaTel C-Major Audio devices. If everything else seems to be correct on your audio interface settings and you are not hearing anything you can give this option a try.
  11. Force WDM Driver to 16-Bit - This option fixes a no sound issue on SoundMax Digital Audio devices. If everything else seems to be correct on your audio interface settings and you are not hearing anything you can give this option a try.
  12. When you are done, close the ASIO4ALL options with the [X] window control in the top-right corner.


There is a video tutorial on the ASIO4ALL driver setup that discusses the common problems.

  1. Make sure you are using the latest version of ASIO4ALL, install it and try again. The latest ASIO4ALL driver will be available at Don't be afraid to try the latest Beta (if there is one).
  2. Unavailable - If any of the inputs/outputs of the devices in the 'WDM Device List' have a RED X through them, it means they are probably being used by another audio application. For example, programs such as 'MSN Messenger', 'Skype', media players etc. can tie up inputs/outputs so, close FL Studio, close any program that may use your audio interface and re-open FL Studio and the ASIO4ALL options. See also point 4 'Reset the playback device'.

    Alternatively - Right-click the Windows speaker icon in the task bar and select 'Playback Devices' then Disable your sound-card, the 'Default Device' (this may release it for use with ASIO). Now open FL Studio and ASIO4ALL, making sure the outputs are activated as shown under the 'Advanced Settings' above.

  3. Nothing shows - If your audio interface or its IN/OUTputs don't show in advanced mode, try downloading the latest driver for your audio interface. This happens when the driver for your audio interface hasn't registered itself correctly with Windows.
  4. No sound - If other applications are not audible or taking over the audio interface see 'Auto close device' on the Audio Settings. Otherwise, if you get no sound at all check the following:
  5. Crackling noises without the underrun count increasing - Check the following:
  6. Beyond Logic - Similar to 'unavailable', if the control panel of your card provides the option to lock the sample rate, deselect it. This is a known cause of 'Beyond Logic' errors. Also try closing and re-opening the control panel, unplugging/re-inserting USB audio devices and/or reinstalling the Windows (WDM) driver for the audio interface. See also point 4 'Reset the playback device'.
  7. Check the ASIO4ALL Manual in the installation directory ..:\Program Files\ASIO4ALL v2\ASIO4ALL v2 Instruction Manual.pdf, FAQ at or try the ASIO4ALL forums.