/etc/rplay/rplay.servers is in rplay-server 3.3.2-14.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | # Sounds rplay.servers
#
# you can use this file to have rplayd retrieve sounds from a remote
# server simply list the hostnames here.
# soundserver.some_where.com
|