LevelOne IAT-1000 - Manual (Page 12)

4.2.1. Play Background Music
Each IAT-1000 belongs to a Zone (the default Zone is default.). All the
IAT-1000s in a Zone receives the same music or announcement
broadcast from the IP Audiocast Manager.
For IAT-1920, it’s 20 Zones, for IAT-1900, it’s unlimited zones.
1. Click on the menu bar to open an mp3, a wav file, or an m3u playlist
2. Click on the menu bar to play back the music. Click to pause the
playback, to stop the playback, to play back the previous song,
or to play back the next song.
4.2.2. IP Audiocast Manager Info
There is a info column in the right-up corner of IP Audiocast Manager, it
displays which Zone is choose, which song is played, how many IAT-1000
is active.