Sound problem with Sony Vaio Z505HSK and 4.5 Release-p5.

I'm working on setting up a sony vaio pcg-z505hsk w/ 4.5-RELEASE-p5.
Things are going nicely, but I'm having a problem with getting sound
to work.

I've built/installed a kernel with

  device pcm

rebooted.

cat /dev/sndstat says:

  FreeBSD Audio Driver (newpcm) May 29 2002 10:26:27
  Installed devices:
  pcm0: <Yamaha DS-1E (YMF744)> at memory 0xfecf0000 irq 9 (4p/2r/0v channels duplex)

Which seems right (same device the laptop reports under linux on my
Z505-JE).

I built/installed xmms from the current ports tree.

I figured out that I needed to turn off the sound component of
gnome/enlightenment (esnd) so that it didn't hog the device.

Now, when I try to use xmms to listen to something, e.g.

  xmms http://scastsrv2.shoutcast.com:8002/

I get a buzzing sound instead of music.  Sometimes I think that I hear
a split second of real sound before it goes off into buzzer mode, but
I have trouble reproducing it.

I also tried this:

  device          pcm0 at isa? irq 10 drq 1 flags 0x0

in the forlorn hope that there was an interupt conflict of some kind,
since there seem to be a bunch of things using irq 9: (greped from dmesg).

  pci1: <NeoMagic MagicMedia 256AV SVGA controller> at 0.0 irq 9
  pci_cfgintr_linked: linked (63) to hard-routed irq 9
  pci_cfgintr: 0:7 INTD routed to irq 9
  pcm0: <Yamaha DS-1E (YMF744)> mem 0xfecf0000-0xfecf7fff irq 9 at device 9.0 on pci0
  pci0: <unknown card> (vendor=0x14f1, dev=0x2443) at 10.0 irq 9
  fxp0: <Intel Pro 10/100B/100+ Ethernet> port 0xfcc0-0xfcff mem 0xfed00000-0xfedfffff,0xfecff000-0xfecfffff irq 9 at device 11.0 on pci0
  pci_cfgintr_linked: linked (61) to hard-routed irq 9
  pci_cfgintr: 0:12 INTA routed to irq 9
  pcic0: <Ricoh RL5C475 PCI-CardBus Bridge> irq 9 at device 12.0 on pci0
  
But either that's not the problem or that's not the solution.....

Anyone have any suggestions?

g.

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