Local Songs on PC will not appear on iphone or macbook.

[mapoulter]

I have a number of local songs that are visible and playable on my PC, however, they are not visible on my mac or iPhone. Playlists that I create with these songs in them are visible but upon entering said playlist and expecting to see the songs, it is simply blank.

I used to be able to see the greyed out songs and an option to download them would present itself, however, I am not even able to see the songs.

Please help.