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Here is the LBL Add-on for NVDA, developed by ReaperAccessible, and offered free of charge to the community.

Before using this add-on, please read the following terms of use carefully:

  1. Acceptance of the conditions and associated risks:
    By installing and using the LBL Add-on for NVDA, you automatically agree to the terms stated in this document. You acknowledge and accept the potential risks associated with its use, including but not limited to risks related to security, compatibility and performance. These terms of use may be subject to change at any time without notice. It is your responsibility to check the ReaperAccessible website regularly for any updates.
    You declare that you have read, understood and accepted the conditions set out in this document.
    If you do not agree to these terms, please do not install or use this add-on.

  2. Free software:
    The LBL Add-on for NVDA is distributed as free software. You are free to copy, modify and redistribute this add-on. However, any modifications are made at your own risk, and ReaperAccessible does not guarantee the compatibility or stability of modified versions.

  3. Responsibility:
    ReaperAccessible and its developers shall not be liable for any direct, indirect, incidental, special or consequential damages arising out of the use of or inability to use this add-on.

  4. Technical support:
    ReaperAccessible will provide technical support wherever possible, but no guarantee is made as to availability or resolution of any problems encountered when using the LBL Add-on for NVDA.

  5. In the event of a problem following an update of NVDA or the LBL add-on:
    Once you install the LBL Add-on and start a supported program, such as Reaper, the LBL Add-on activates immediately. However, if something goes wrong, it may disrupt accessibility in Reaper or even cause NVDA to malfunction. It is essential to keep in mind that expectations of perfect operation are not always realistic, especially with free software. In this context, as long as you have not paid for the software,developers are not legally required to guarantee flawless operation. By using open source software and free add-ons like LBL, you implicitly assume the role of beta tester, which may impact the stability and behavior of the software. Before updating the LBL add-on or NVDA, it is recommended to create a portable version of NVDA. If something goes wrong, you can then uninstall NVDA and reinstall your portable copy, providing a backup solution.

  6. Non-submission of LBL to the NVDA Extension Development and Review Process:
    Please note that the LBL Add-on is not subject to the revision control of the NVDA Extension Development and Review Process. Accordingly, we are not required to comply with the associated rules.

  7. Using the Reaper Email Distribution List :
    If you have any problems or questions regarding the use of the LBL Add-on for NVDA, please do not use the Reaper email distribution list (This email address is being protected from spambots. You need JavaScript enabled to view it.). to request support or report problems. For technical assistance or to report issues with the LBL Add-on for NVDA, please contact ReaperAccessible directly by email at: This email address is being protected from spambots. You need JavaScript enabled to view it.. We are available to respond to your inquiries and provide any necessary assistance.
    ReaperAccessible and its developers assume no responsibility for any disruption caused by members of the "rwp" email distribution list or any other discussion list on Reaper, OSARA, NVDA, or any other place where accessibility solutions are shared when the problem arises from the LBL add-on. It is the responsibility of the moderators of these lists to make the appropriate distinction in such cases.

Here are the steps to follow to install LBL.

Please note that if you are a Sibiac user, you need to uninstall it and the associated OCR module. It is not possible to activate Sibiac and LBL at the same time in Reaper. So, to use Kontakt full version 6 or 7, and SessionDrummer3 as well as all VSTs supported by Sibiac with LBL, you must uninstall Sibiac and Sibiac OCR.

We have integrated Sibiac's code into LBL

LBL supports the same plugins as Sibiac as well as Kontakt full version 6 or 7. You must install the 2 extensions LBL and LBL OCR, which are located in the installation folder. To do this, simply open the files by pressing Enter and follow the instructions.
If you need assistance, please write to us by clicking on the link below:
This email address is being protected from spambots. You need JavaScript enabled to view it.

Here's how to use LBL

  1. Insert the plug-in onto a track in Reaper.
  2. In the FX window, select the VST and press F6 to bring the focus of LBL into the plug-in.
  3. Use the LBL keyboard shortcuts assigned for this plug-in.
    In certain cases, for example with Native Instruments - Kontakt, if you load an instrument, once the instrument is loaded, LBL loses the focus of the plug-in.You simply press Alt+Tab and return to the FX window with Alt+Tab again and LBL will take over the plug-in.

Full version of Kontakt 6 and 7 is now supported.

Notice to all musicians who do not have a Native Instrument Komplete keyboard, you can now use Kontakt with any MIDI controller. So you can load all Kontakt compatible instruments with any MIDI controller.
To browse folders on your computer to load a .nki with Kontakt full version 6:
1. Add a new track.
2. Set monitoring to normal.
3. Arm the track.
4. Select your MIDI controller as input to the track.
5. Press F to open the FX window.
6. Add Kontakt 6.
7. Press F6, press Tab to Load and press Enter.
Windows Explorer will open. Locate and select the .nki of your Kontakt compatible instrument, press Enter and the instrument will load into slot 1.
With some libraries, you must set MIDI to Omni by pressing O.

Multi slot is not supported.

Since we're working in Reaper, there's no point in using more than one location at a time in Kontakt.
Note that it is not possible to use F6 in the FX window to move the focus of NVDA with version 7 of Kontakt. You need to press Tab until NVDA tells you Kontakt 7 and follow the instructions given by NVDA.

Here are the keyboard shortcuts for Kontakt 6.

• I - Says the name of the loaded instrument
• Delete - Unloads the loaded instrument.
• O - Sets MIDI to Omny.
• M - Speaks the active MIDI input channel.
• N - Loads the following .nki into the folder
• P - Loads the previous .nki into the folder

Here are the keyboard shortcuts for Kontakt 7.

• Delete - Unloads the loaded instrument.

Download LBL

Click here to download the Add-on LBL for NVDA