To find "RealPlayer" items (or any other files) in the Macintosh systems
OS 9.x and OS 10.x (and possibly earlier operating systems, I can't
remember), use "Sherlock" which is part of the operating system.

Be sure Sherlock is searching the hard drive in your computer (or other
external hard drives you desire) and not the Internet.  Once identified,
you may "select all" related files from the "Edit" heading in the
finder menu and then select "move to trash" (Command + Delete keys)
under "File" in the finder menu.  If you have difficulty, "move to
trash" one by one.

This is much faster than going to the respective files and trashing
from there.

Gary Bagley