I'm not sure what hifi system OP has, but another way to do this is by emulating the iPod remote mode over USB. It saves a bunch of trouble with emulating files

I'm not sure what hifi system OP has, but another way to do this is by emulating the iPod remote mode over USB. It saves a bunch of trouble with emulating files. Denon/Marantz products have supported (and i believe still do) for a very long time