The patent in question was issued to Personal Audio in 2012 after another company started by its founder James Logan went belly up. Personal Audio was founded as a repository for the patents held by that former company, and has used them to litigate against much larger infringers, often for...
Perhaps Personal Audio was looking to quietly reach a settlement with Adam Carolla. But then again, Personal Audio should have known that Adam Carolla never does anything quietly.
The use and licensing of open source software (OSS) continues to grow and it is not going away anytime soon