Also use track_number to retrieve song track.
Also use track_number to retrieve song track.

This adds support for id3v2 tags such as TRACK/TOTAL.

cernbox/core,pixelipo/server,whitekiba/server,pollopolea/core,owncloud/core,sharidas/core,andreas-p/nextcloud-server,jbicha/server,lrytz/core,pollopolea/core,pixelipo/server,endsguy/server,andreas-p/nextcloud-server,lrytz/core,pmattern/server,Ardinis/server,nextcloud/server,pixelipo/server,whitekiba/server,endsguy/server,IljaN/core,endsguy/server,IljaN/core,IljaN/core,owncloud/core,pmattern/server,IljaN/core,bluelml/core,nextcloud/server,andreas-p/nextcloud-server,pollopolea/core,pmattern/server,xx621998xx/server,sharidas/core,bluelml/core,cernbox/core,Ardinis/server,jbicha/server,lrytz/core,Ardinis/server,jbicha/server,Ardinis/server,bluelml/core,sharidas/core,bluelml/core,owncloud/core,endsguy/server,pollopolea/core,sharidas/core,owncloud/core,pixelipo/server,lrytz/core,xx621998xx/server,whitekiba/server,xx621998xx/server,jbicha/server,cernbox/core,IljaN/core,pixelipo/server,whitekiba/server,xx621998xx/server,sharidas/core,lrytz/core,whitekiba/server,Ardinis/server,andreas-p/nextcloud-server,jbicha/server,michaelletzgus/nextcloud-server,michaelletzgus/nextcloud-server,pmattern/server,phil-davis/core,endsguy/server,cernbox/core,xx621998xx/server,michaelletzgus/nextcloud-server,cernbox/core,owncloud/core,bluelml/core,pollopolea/core,nextcloud/server,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,nextcloud/server,pmattern/server