Playback - 4.0.1.3

The player you use to play the recorded files is defined at this section. You can reach Playback Settings tab by clicking Tools > Options > Playback. 

There are two options for this as it seen below.

Use system default player: Makes system’s default player active which is probably Windows Media Player.

Use a different player: Any player installed in Ingest workstation can be defined as the active player application for recorded files here.