Audio/Video Problems

[Bill vance]

Howdy folks;

I'm running a fresh install of Kubuntu 10.04 on an i386 machine, and
have downloaded most
of the Medibuntu progs, and I'm still experiencing some wierd
audio/video problems.

1.   With both files and DVDs, The videos stay as they first appear,
and then every second or
      two, they twitch a little, about a quarter inch or so instead of
flowing smoothly, as they
      should.

2.   I have an Aoundblaster AWE-16 sound card, and an internal, (on
the motherboard),
      sound interface that has never been hooked up to anything, and
never will be.  When I
      reboot, this little window appears in the lower left corner of
the screen, announcing that
      it's switched from the sound card to the motherboard interface,
and do I want to switch
      back?

3.   Just now when I re-booted, a large window opened up, announcing
that a long list of
      sound devices, (inputs, outputs, and etc.), have been removed,
and do I want kubuntu
      to forget about them?

4.   Nothings working with youtube.  How do I get a version of flash
that works, and what
      does it need for setups?

Thanks in advance for any/all help.

Bill