Music won't play on Roberts radio

[Hungryhalibut]

I've now tried L16 on the Roberts, and it works! I then followed the advice to set the transcoding to flac:wav/L16, and tested it all. The Naim streams WAV while the Roberts plays L16 happily. Both 16 and 24 bit files work on the Naim absolutely fine.

Marvellous - thanks so much for your help. I guess that calls for a donation! Hopefully others will find this helpful too.