To download all the relevant Ubuntu packages:
# Make script executable
$ chmod 777 ubuntu_packages_install.sh
# Run script to install
$ ./ubuntu_packages_install.sh
To load all git submodules:
$ git submodule update --init --recursive
To download all the data files:
# Make script executable
$ chmod 777 download_data_files.sh
$ ./download_data_files.sh
To download all the sound files (This is a really lengthy process and hence is not advisable unless you absolutely have to):
$ python download_all_sounds.py