I am having some minor issues playing back to Denon receivers and Denon Home speakers as well (same MFR. as Marantz). The only way it works error free is when I transcode everything to MP3 from the MM DLNA server. I use the HEOS app rather than push to the end device. The same problem exists in both MM4 and MM5. Give that a try for now. (BTW: Most of my music is in ALAC format so I transcode to MP3 Insane 320 kbit/s.)

Capture this in a debug log (step 4b) and attach the log to a Support Ticket: viewtopic.php?f=30&t=86643

5.0.0.2299

Which build of MMW5 do you have this problem with?

I'm casting to the device from the MediaMonkey app on my PC

Are you accessing the MediaMonkey Library from the Amp or playing from MediaMonkey to the Amp? Which build of MMW5 are you on?

Only just discovered MediaMonkey and started off with v4 but had issues when playing to a device (Marantz amp). Playback is problem free but will not progress through a playlist, just loops the current track endlessly, despite having all repeat functions turned off. I installed v5 and am having the same issue. Any ideas? Would love to resolve...