The ->get URL is wrong.

Upd Sorry, that was probably a typo; there is a different problem.

First: $mech->get returns the redirect page, and that does not have the necessary form. Use https://www.soundclick.com/community/memberlogin.cfm?action=logoutdone&email=&ErrorMessage=Please%20log%20in as the URL.

Second: WWW::Mechanize does not have an input_name method, only form_name.

This seems to work:

use strict;
use WWW::Mechanize;
use HTTP::Cookies;

my $mech      =  WWW::Mechanize->new( agent =>"Mozilla/5.0 (X11; U; Li
+nux i686; 

en-US; rv:1.7) Gecko/20040918 Firefox/0.9.3 ");
my $i = 0;
my $usr  = "username";
my $pw  = "password";

$mech->get("https://www.soundclick.com/community/memberlogin.cfm?actio
+n=logoutdone&email=&ErrorMessage=Please%20log%20in");
$mech->cookie_jar( HTTP::Cookies->new() );

if( $mech->content() =~ /CFForm_1/ ){
        $mech->form_name("CFForm_1");
        $mech->field( email => $usr );
        $mech->field( password => $pw );
        $mech->click();
    
        if ($mech->success() ) {
            if ( $mech->content() =~ /My personal member profile/ ) {
            print "User $usr logged in successfully!\n" ;
        }
        else {
           print " User $usr was unable to log in successfully!\n";
        }
    }
}
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