RuntimeError in Music#show

Showing app/views/music/show.rhtml where line #11 raised:

we dont display pay songs yet

Extracted source (around line #11):

8:   fjs.parentNode.insertBefore(js, fjs);
9: }(document, 'script', 'facebook-jssdk'));</script>
10: 
11: <% raise 'we dont display pay songs yet' if @product.price > 0 %>
12: <% raise "song disabled? #{@product.date_available} > #{Time.now}" if @product.date_available > Time.now %>
13: 
14: <% @two_column_layout = true %>

RAILS_ROOT: /home/rdp/dev/prod_flds

Application Trace | Framework Trace | Full Trace
/home/rdp/dev/prod_flds/app/views/music/show.rhtml:11:in `_run_rhtml_app47views47music47show46rhtml'
/home/rdp/dev/prod_flds/app/controllers/music_controller.rb:281:in `show'

Request

Parameters:

{"id"=>"Come-and-Set-Me-Free-SATB-by-Rebecca-Belliston"}

Show session dump

Response

Headers:

{"Content-Type"=>"",
 "Cache-Control"=>"no-cache"}