either way, ICY401 errors usually happen due to clients trying to connect the DNAS server when there is no source connected to it. as such you really need to make sure there is a source connected and that there are no other errors being thrown in the log.
[edit]
locking as a newer thread was created which i didn't see until after this reply and merging them was going to look too weird. issue / discussion continued in http://forums.winamp.com/showthread.php?t=341397

-daz
Leave a comment: