An easy way to copy files to the neo is to use scp. From the host, use these commands:
for a single file:
scp (filename) root@(phone ip):/(destination)
for a directory:
scp -r (dirname) root@(phone ip):/(destination)
For example, I copied some music to the cf card (I defined ‘phone’ as 192.168.1.202 in my hosts file):
scp -r The\ Millions\ Too\ Many/ root@phone:/media/card
I averaged around 250KB/s for copying over the USB 1 link, not great but tolerable.
note that you should use a recent build if writing to the card, as there was a bug that could cause corruption of the card on earlier systems (pre ???)