I removed the dot by using the Dax Editor supplied with the latest Beta versions of Orange. Open the Dax Editor and load the CMI template. Then select the Group tab on the top of the editor to bring up the Grouping section of the template. Next scroll down until you see the foillowing code:

<P class=catno><b><!--[if($SHOW_CMISTYLE2)]--><!--[if(Number)]--><!--[Number/]--> - <!--[/if]--><!--[/if]--><!--[ArtistSort]-->Artist<!--[/ArtistSort]-->