Hello,
I have the new creative zen and it doesnt work with libmtp0.2.4.
This is some info I get:
Device 1 (VID=041e and PID=4157) is UNKNOWN.
Please report this VID/PID and the device model to the libmtp development team
francois@francois-desktop:~$ mtp-detect
libmtp version: 0.2.4
Attempting to connect device(s)
usb_claim_interface(): Operation not permitted
LIBMTP PANIC...
2007-12-03 17:44:12 UTC in libmtp