Well, don't ask why I even installed Winamp

Anyway, funny thing is (see below):
[root@localhost Winamp]# ls
Winamp-0.a1-1.i386.rpm
[root@localhost Winamp]# rpm -e Winamp-0.a1-1.i386.rpm
error: package Winamp-0.a1-1.i386.rpm is not installed
[root@localhost Winamp]# rpm -i Winamp-0.a1-1.i386.rpm
package Winamp-0.a1-1 is already installed
[root@localhost Winamp]#
Any ideas how to remove it?