The devtools package for R allows, amongst other things, for R packages to be downloaded from GitHub: install_github().
As part of the BioAcoustica project an R package to access the BioAcoustica dataset, BioAcousticaR, is in development with the code hosted on GitHub.
To install devtools on Ubuntu first requires the libssl-dev package to be installed from the command line:
sudo apt-get install libssl-dev
Then the devtools package can be installed in R as usual: