OK, I'm embarrassed, but I had the previous alpha working, then it stopped working (presumably when I screwed something up) so I then installed alpha 4 and keep getting (wish I knew how to cut and paste from cprompt)
"trio.player.TRioPlayerServerException: Error connecting to JReceiver
Pleas check that JReceiver is running and properly configured.
at trio.player.TRioPlaerJRecServer.connect(unknown Source)
...listArtist(unknown source)
and unknown source for the rest
the:
by: jreceiver.common.rpc.RpcException:xmlrpc-problem invoking method [Drivers.Register]

etc

Any ideas?

Jrec seems to be working fine when I tell it to play a playlist within jetty.

Thanks.