Refresh Library playlists

Sort of new to Roon. I added some new albums to my library recently and also added them to my playlists. All my music is stored on a NAS. I used Jriver to edit my .m3u playlists however Roon has yet to pick-up the new tracks in the imported playlists? It found the new album but the playlist never changed. Any suggestions on how to fix this?

Thanks.

Anyone? Thanks;)