Installer Problems?

If the .pkg installer is failing for you, have a look in /var/log/install.log to see if the installer logged anything useful.

You can also try extracting the files from the .pkg and installing them manually. It might work that way and if it doesn't, it might help narrow down the problem.

Replace BackgroundMusic-0.4.0-SNAPSHOT-b38f6dd.pkg in the following.

pkgutil --expand-full BackgroundMusic-0.4.0-SNAPSHOT-b38f6dd.pkg ./bgm-pkg-expanded
cd bgm-pkg-expanded/Installer.pkg/

# Install the driver.
sudo cp -r Payload/Library/Audio/Plug-Ins/HAL/Background\ Music\ Device.driver /Library/Audio/Plug-Ins/HAL/

# Install the app.
cp -r Payload/Applications/Background\ Music.app /Applications/

# Install BGMXPCHelper.
cd Scripts/

# This will probably print out some errors. The output explains them a bit.
sudo ./postinstall
echo $?

If it worked, the last step should open Background Music.

Either way, feel free to open an issue about it and please attach any relevant logs and output from the process above and from /var/log/install.log.