[CentOS] star --> tape

I just got an error using star to send an archive to tape. I know the
tape works--I tested it with gnu tar yesterday. But when trying

find /home -mount -depth -type f | star -c list=- -z f=/dev/st0

I got the error:

star: can only copy files

When I wrote to the tape with tar yesterday,

tar -zcvf /dev/st0 /home/matt

worked fine. And that star command works when the output destination
if a file on disk.

What do I need? Thanks!