[Icecast] Refresh Ices 0.4.?

[Anatol]

Hello!

How can I refresh ices 0.4.? If the playlist has changed, I want to load 
it into the ices at a definied time. I read I can do it with:
kill -SIGHUP <icespid>
But this don't work! :(

Alternativ I can stop the ices and restart it, but at this moment, the 
listeners lose the source-connection and have manualy to reconnect.

Is there any solution? For refreshing ices 0.4 or to hold the clients a 
longer time in icecast2.

Many thanks for your help!
tol