Drop-outs streaming internet radio

[peter.rayner]

I've been away for a month and, on return, am getting lots of drop-outs streaming my favourite internet radio station.
Here's the m3u file:
#EXTM3U
#EXTINF:99999,[*classicfm] ABC ClassicFM
http://live-radio02.mediahubaustralia.com/2FMW/aac/
This has been working fine for a few months but now will play for a variable length of time then stop.
Length of time depends on time of day and is shorter when load on the streaming server or network is likely to be heavier. Also there's no problem plaing local material from the Synology NAS (which is also the host for minimserver).
I've attached a fragment of the minimserver.log which hopefully shows a full cycle from requesting playing to dropout.
I realize this is very likely a network or server problem but are there settings I can try to reduce this?
thanks again
Peter