I was doing some amanda testing and labeled a tape.  Afterwards I backed up to 
the tape using tar not amanda.  I used the following syntax tar -c -b 4096 -f 
/dev/nst0 /mnt/mail/logancty.   I am unable to even list the files on the tape 
using tar -t /dev/nst0.  We have found that we are able to list files if the 
tapes have not been labeled by Amanda.   Amanda is not loaded on the server.