Hi Jim. Based on your note regarding wifi, I will set the range expander to use a static IP this evening and see if that might help.
Meanwhile, I thought it might be helpful to indicate my settings on the server, running MC22, and the Pi, running MC20:
On the Pi (using a Meridian Explorer 2 DAC, which goes to 24/192):
Audio Device is front:CARD=DAC,DEV=0 [ALSA]
Bitstreaming set at none
Sample rate is no change until 352K, which is set for output at 176.4 and 384k and higher set for output at 192k
In Media Network, Access Key and authentication are enabled and the DLNA Renderer box is checked
Audio conversion is set for Don't convert audio
The Generic DLNA is set for original mode audio in format PCM 24 bit; under Advanced, I have the Bitstream DSD, DLNA, DLNAExtra and Enable bitrate field boxes checked
On the server:
In Media Network, DLNA Server, DLNA Renderer and DLNA Controller are all checked
The Generic DLNA is set the same as the Pi above
Under Audio for the Pi zone, it states that I should configure audio under the Add or conflgure DLNA servers
Sample rate is no change until 352K, which is set for output at 176.4 from there and higher
I note in particular that with these settings, SACD ISOs and DFF files appear to play on the Pi renderer -- the screen shows the track and progression of playback -- but no sound comes out. This is happening only on SACD and DFF files. When I was using the Pi as a second server (which is why I thought I might be having the crashing, but switching to a renderer status for the Pi hasn't helped), SACD ISOs and DFF files did play and produce sound, using the same Audio Device setting. So this is a secondary problem, in that I've lost sound output for those highest resolution files. Unchecking the Bitstream DSD boxes on the Pi and server does not change this result.
Finally, I note that on the Pi's startup, I see a red "failed!" flag for the line startpar: services(s) returned failure: hostname.sh ... No clue if that tells you anything further.
Thanks for the continued assistance. JCR