installing streamtuner on FC5

[Gerhard Magnus]

I'm trying to install the music stream directory browser Streamtuner.
Following the instructions in the Stanton Finley Linux Installation
Notes
(http://www.stanton-finley.net/fedora_core_5_installation_notes.html)
I've downloaded the package streamtuner-0.99.99-12.fc5.i386.rpm from
http://www.bennewitz.com/rpms/streamtuner/fc5/.  But the installation
fails with a warning: "streamtuner-0.99.99-12.fc5.i386.rpm: Header V3
DSA signature: NOKEY, key ID e8d479fc" and then an error: libtag_c.so.0
is needed by streamtuner-0.99.99-12.fc5.i386.

Any hints as to how to proceed?  I've googled libtag_c.so.0 but haven't
found anything I can make sense of.  Thanks for the help.