I am no longer running 0.1.7, and I didn't have any problem with it, but see if this helps...

1) You should have receiver.arf in the main directory after you unzip the tRio-0.1.7.zip file.

2) You may be correct, I see stuff in the source (also included in this zip) that looks like a java NFS server and SSDP server, so it's possible this was built-in, or at least work was started. But I don't know if it is working or not. In my case I still un-tar'd the reciever.arf into a NFS exported tftp folder with the IP of the Rio DAR. Look in the trio.xml file to see if Server url is "ssdp". How were you booting / getting SSDP before trying 0.1.7?

3) You can tell which client the Rio DAR is running from the boot splash screen. You may need to hard reboot the Rio DAR to get it to reload the client software.