7. The in-vehicle audio system of claim 6 , wherein in response to receiving a command to delete one or more items of audio content from the storage device, the compiler updates the vocabulary dictionary by compiling at least a portion of the vocabulary dictionary.
7. The in-vehicle audio system of claim 6 , wherein in response to receiving a command to delete one or more items of audio content from the storage device, the compiler updates the vocabulary dictionary by compiling at least a portion of the vocabulary dictionary. 9. The in-vehicle audio system of claim 7 , wherein the compiler compiles at least the portion of the vocabulary dictionary during a shutdown process.