Attached is a tgz file which contains the following patches:

usb-empeg-2.2.18-pre21.diff
usb-empeg-2.4.0-test11-pre5.diff

An early test (using emptool) showed:

Transferred 24582308 bytes in 59.258133 seconds, 414834.332144 bytes/sec

I've not tested either of them on a machine with an OHCI controller, as I don't have access to one.
Let me know if you find any bugs. As always, YMMV.