API returns empty album

[SpaceBison]

When calling /current, the response json always contains an empty string instead of album name.

Here's an example:

{
  "title": "Unspoken",
  "artists": "Kylesa",
  "album": "",
  "icon": "/home/cmb/.config/tidal-hifi/notification.jpg",
  "playingFrom": "Mix",
  "status": "paused",
  "url": "https://tidal.com/browse/track/36674709?u",
  "current": "1:58",
  "currentInSeconds": 118,
  "duration": "4:47",
  "durationInSeconds": 287,
  "image": "https://resources.tidal.com/images/afed4269/ee06/4c89/a547/3eba5116738b/640x640.jpg",
  "favorite": false,
  "player": {
    "status": "paused",
    "shuffle": false,
    "repeat": "off"
  },
  "artist": "Kylesa"
}

[p-mng]

Sometimes album incorrectly reports the playlist name instead of the album, so this issue is likely linked to #505.