Plex output to DLNA

Hello

Since 2 years I have an PLEX-Server. After this time I sell my Server (win2016) and get a new QNAP-System (TS-251A). Is there a option to play PLEX to DLNA-Speaker?
So - my Receiver has DLNA an my Speakers (Raumfeld) too. With Qsync I can play any music file with the Receiver and the speaker - but in my PLEX I dont see any option to play Music (out of plex-app) to my receiver - but when qsync (a free software) why plex ca’t do this too?

Mfg

Get an Amazon Alexa for remote playback of audio. $35 and done.

Oh… mmmh I have an Onkyo TX-NR636 - he has the DLNA-Logo - so I thought I can play with him because in my QSync-App I cann play Musik easily to my Receiver in this way. … I will looking. Thanks so far.