redmine/app/views/attachments/other.html.erb

<%= render :layout => 'layouts/file' do %>

  <% kind = if @attachment.is_video?
       'video'
     elsif @attachment.is_audio?
       'audio'
     end %>

  <%= render :partial => "common/other",
             :locals => {
               :kind => kind,
               :path => download_named_attachment_url(@attachment,
                                                      @attachment.filename),
               :download_link => link_to_attachment(
                                   @attachment,
                                   :text => l(:label_no_preview_download),
                                   :download => true,
                                   :class => 'icon icon-download'
                                 )
             } %>
<% end %>