Patent ID: 7522966

Claim:
A computer system adapted to play at least one audio file, said computer system comprising: a system CPU responsive to a control signal to load a first operating system or a second operating system, wherein said first operating system is run by said computer system in a first operation mode and said second operating system is run by said computer system in a second audio compression mode, and wherein audio data of said at least one audio file is transferred from a south bridge of said computer system through a first transfer path to an output amplifier if said computer system operates in said first operation mode, and wherein said audio data is transferred from said south bridge through a second transfer path to said output amplifier if said computer system operates in said second audio compression mode; and at least one function key configured to enable a user to enter a directory mode if said computer system is in said second audio compression mode, wherein said directory mode provides said user access to a directory of said at least one audio file.