I've been having no end of problem with glitches in streaming media when the media is stored on the server in my basement. Wired connections are fine, but then again they are all GigE. Wireless-G has been flaky.
I'd spent hours tweaking QoS on my wireless AP to prioritize streaming media to no avail. It always worked for my VoIP phone, so I couldn't figure out why it wasn't for streaming video and audio.
I finally just dumped some packets and figured out why. I post this here for posterity.
Repeat after me: "SMB over TCP is NOT a streaming protocol". Not as far as QoS default labels are concerned.
Sigh. That is what I get for assuming I knew the Linksys definition of "streaming media". SMB over TCP is what is used for remote network shares like the Samba instance my in-home media server runs.