VLC and audio streams

Of course, the Roku plays WAV and MP3 just fine, but I'm considering ripping 
my classical collection into ogg or flac.  So I've been trying to use VLC to 
play these.  The problem is (mostly) volume.  I've ripped using CDex and all 
four formats play fine with winamp.  With VLC, WAV and MP3 are ok/reasonable, 
volumewise, but ogg is very faint, and flac doesn't play.  I've been using as 
the command   vlc  --volume 1023 file_name.

Is there something I'm missing?

As for flac, I get no "Audio Path ... SUCCESS" message.  Since VLC 0.7.2 on 
Windows doesn't play flac either (the "where am I?" slider moves through the 
file very quickly), maybe I shouldn't be suprised.

Richard