@Giiba Genius! That fixed it for me! Many thanks.
@TotalSonic Many thanks for that comprehensive reply Steve. I was simply trying to copy a file from my Ubuntu laptop to my tablet. Previously I've accomplished this using Bluetooth or Wifi File Transfer. That solution will suffice for now and avoid having to set up NextCloud on my other Ubuntu devices.
Perhaps the solution you suggest is the way to go long term.
@Flohack I just listened to your audiocast. It was very interesting. I noticed that your audio was crystal clear - much better than Alfred's. He sounded somewhat muffled. Do you have a better microphone or an audio processor? It would be great if Alfred and Aaron could be made to sound as good as you.
@advocatux BTW, my Nexus 4 UT pairs and connects to my Bose Sound Dock via a cheap chinese bluetooth adapter which fits in place of the iPod. I can stream both ogg and mp3 files to the Bose from my N4. Cool eh? (Wish I could remember how to make commands appear in red on this forum.)