Hi spencerandhill,
welcome to Rune Audio.
I saw, that the last commit on github is 2 years ago. Is the project still active?
The latest images of Rune Audio (RP2/3 and ODROID C1 / C2) are based on the dev version.
The dev version has latest commit on Aug 27 2016.
Am I able to commit on the github-repo without any permissions?
I think best way to learn Github is to fork our repository and play with your own first.
You then can make a pull request to the official repository.
If you have questions feel free to contact me or ACX via PM as well.
Frank