FC3->FC5 problems - no audio, fonts bad, vmplayer install

[B Wooster]

Took a while to get my FC3 box updated to FC5, using a bootable DVD.

Now am up, and running, still have been unable to resolve quite a few
issues, if anyone has pointers, let me know:

1) no audio.
Using KDE kcontrol, the sound panel says audio is enabled, but when I
click on Test, there is no sound.

2) I have installed the fonts using a RPM msttcorefonts-1.3-4.noarch.rpm.
But xterm, firefox windows look much worse than they did on FC3. I
guess I'll need to fiddle around with specific font settings (I
rebooted after installing the fonts).

3) Cannot configure vmware-player. Running vmware-config.pl first
complains that gcc 4.1.1 is installed while kernel was compiled with
4.1.0.
I forced a yes, continue on that point, and then it got stuck on the
include path - I gave it
/usr/src/kernels/2.6.16-1.2122_FC5-i686/include/
but it complained:
The kernel defined by this directory of header files does not have the same
address space size as your running kernel.
No idea what to try next...

4) Assuming that vmware-player needs complete sources and not just
kernel-devel, I tried:
yumdownloader --source kernel, which fails with:
No Match for argument kernel
I'm running 2.6.16-1.2122_FC5 - is the src not available for that?

And then there were the problems I had to manually fix - kdmrc was
pointing to the wrong X - in X11R6 instead of just /usr/bin.

Other minor issues:

5) on boot, I get a "can't delete /var/run/cups/certs, is a directory"
message - any way to stop that line from appearing?

6) I've not yet figured out how the make X11 startup using the
1280x1024 mode - I thought all I had to do was to make it appear first
in the list, here's what I have:
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1280x1024" "1280x960" "1152x864" "1024x768"
"800x600" "640x480" "1600x1200"

But it ends up in a much larger display size.