No sound on Laptop (after downloading 5.2)

Hello guys/girls,

Since downloading & installing Rekordbox 5.2 I can't get any sound through while analyzing and sorting out my music. Had no trouble with this before updating/downloading 5.2 version. 

While all other applications on my Windows 10 laptop give sound, Rekordbox won't. Preferences > Audio > Windows Audio (Realtek High Definition Audio) hence I'm not using it in performance mode.

Am I missing something or is this a bug? 

Thanks in advance,

Youri