The best way to install the Reaper digital audio workstation on Linux is to install the included script. You’ll have to download the Reaper DAW program files from the internet to start.
After downloading the latest Reaper DAW files to your computer, you’ll have to extract the contents of the TarXZ archive using the tar command.
tar xvf reaper646_linux_x86_64.tar.xz
Once the extraction process is complete, you must create a folder named Reaper in your home directory using the mkdir command.
mkdir -p ~/Reaper
Move the reaper_linux_x86_64 folder into the newly created Reaper folder in your home directory using the mv command.
mv reaper_linux_x86_64/ ~/Reaper/
You must now download WDL to your computer and build it with the make command.
Note: WDL will only build if you have the correct compilation packages set up. On Ubuntu and Debian, it is build-essential. On other distributions, the packages will be different. You’ll also need the libgtk-3-dev package (or equivalent) and the git package.
sudo -- sh -c 'apt update; apt upgrade'
sudo apt install git build-essential libgtk-3-dev
git clone http://www-dev.cockos.com/wdl/WDL.git ~/WDL/
After downloading WDL, enter the directory using the cd command.
cd ~/WDL/WDL/swell
Run the make command to build the software. This process shouldn't take long at all. When the process is complete, run the ln -sf command.
ln -sf ~/WDL/WDL/swell/libSwell.so ~/Reaper/reaper_linux_x86_64/REAPER/libSwell.so
Next, you’ll need to run the installation script for Reaper. First, move into the Reaper folder in your home directory to run the script.
cd ~/Reaper/reaper_linux_x86_64
Execute the Reaper DAW installation script on your computer by running the following command.
./install-reaper.sh
A text installation tool will appear in the terminal by executing the script. Using the keyboard, press the I key on the keyboard. This will begin the installation process.
The installation script will then ask where you wish to install the software. Reaper will either install in /opt or ~/. Install Reaper to the ~/ directory (home folder) for best results.
To install the software to the home directory, press the 2 key on your keyboard. Then, press the Y key on the keyboard to confirm you wish to create a desktop shortcut on your Linux system.
After creating the shortcut, the installation tool will ask you to proceed with the installation. Press the Y key on the keyboard to finish the setup process on your computer.
Source: https://www.addictivetips.com/ubuntu-linux-tips/reaper-daw-linux/