After much messing around with our jplayer player we decided (wrongly or rightly) that it was possibly responsible  for  some of our audio looping problems some of our listeners had been complaining about.. We changed this for  a Flash player that we had used before and relegated the jplayer to our backup player page.

Unfortunately this Flash  player seems to suffer from some form of buffereing problem so randomly causes the disconnect. So we have substituted it for a new player from free Flash Player - http://www.freeflashplayer.info/