Abstract: A vehicle audio system is provided that includes an audio receiver having a radio tuner, a random access media reader adapted for accessing audio data files such as those stored on a compact disc, a display, a processor, and software. The software enables the processor to detect when a compact disc is coupled with the random access media reader, to read the number of audio data files and data folders stored on the compact disc, and to display the number of files and folders on the audio system display.

Abstract: A vehicle audio system is provided that includes an audio receiver having a radio tuner and random access media reader capable of accessing audio data files such as those stored on a compact disc. The audio system includes a switch selectively operable in at least two modes, the switch operable in a first mode for tuning the radio tuner, and operable in a second mode for fast track searching and selecting for playback one of the audio data files. The audio system also includes software enabling a processor to read the filenames of the audio data files stored on a compact disc, sort the filenames into an alphabetical index, and display and access the audio data files in the order of the alphabetical index.

Abstract: Royalty and other fee collection for software upgrades and updates is facilitated by generating a software package that is unique to the system on which it is to be installed. As a result, when a consumer purchases a software upgrade, the upgrade can only be used on one particular system. In one implementation, distribution of upgrades and updates for a vehicle audio system is controlled by encrypting the vehicle identification number (VIN) of a vehicle into the software package used for the upgrade or update. The software package can only be used to upgrade software residing on the vehicle corresponding to the VIN. As a result, unauthorized distribution of the software package is prevented.