Today I read an interesting article from Linux Journal.
In the article, there is an interesting example of Isochrouns USB Transfer example based on lpcusb. So I use lpc21isp and download the code to my Olimex LPC-P2148 board which the developers are also using. They have also the Linux host example based on usbfs which seems to work right out of the box. Now I need to read the firmware in more detail.
There are also quite some examples from the psas site.
lpcusb (get the svn version)