Hi,
The IDT software package which will also reinstall the Beats Audio interface can be downloaded from the following link.
http://ftp.hp.com/pub/softpaq/sp59501-60000/sp59542.exe
The HP SimplePass installer is on the link below.
http://ftp.hp.com/pub/softpaq/sp56001-56500/sp56487.exe
Regards,
DP-K