Hier mal ein schöner Forwarder Channel
There are several dol forwarder channels for the usb loader. But for some reason, they all codedump if a USB device is attached. Well at least on my Wii it does. Disconnecting the USB will make it work, but that defies the whole purpose of the application of course.
Works 100% with Sound
It should be placed in \apps\usb_loader\