32-bit Linux is going the way of the Dodo bird. How long will it be before Devuan drops it?

So is the updater now ready for prime time?

It really isn't safe to use older browser versions. Have you considered using browsers that support legacy extensions and are still maintained with security and bug fixes? There's Pale Moon, Basilisk, and Iceweasel-UXP to choose from (and the upcoming Borealis Navigator). There are still choices out there. While it can't be said that all legacy extensions will work on them, the vast majority will.

Is there supposed to be an icon in the panel? I don't have one. I copied the files/folder according to the instructions and rebooted. I didn't have any updates (checked in Synaptic) so is that why?

I looked that up and I see that there are 24 versions of it. Which version did you try? It might be worth a shot to try an earlier version. Or, try changing to Gecko compatibility. That's the setting I use.

I ran apt rdepends gstreamer1.0-pulseaudio and this is the result. What does the line before some of the items on the list mean, if anything? At first I thought it meant that those are installed apps since I noticed Handbrake has one, but I checked some of the others and they weren't installed. Is there a way to get results of only installed apps on my system?

gstreamer1.0-pulseaudio
Reverse Depends:
  Depends: gstreamer1.0-plugins-good-dbg (= 1.10.4-1)
  Recommends: totem
  Recommends: rhythmbox
  Depends: quodlibet
  Recommends: plainbox-provider-checkbox
 |Depends: pitivi
  Recommends: pidgin
 |Depends: phonon4qt5-backend-gstreamer
  Depends: phonon-backend-gstreamer
  Recommends: mopidy
 |Recommends: libwebkit2gtk-4.0-37
  Depends: knowthelist
  Depends: kazam
 |Recommends: handbrake
  Depends: gnome-core (>= 1.10)
  Recommends: gst123
  Depends: gnome-sound-recorder
 |Depends: banshee
  Suggests: gnome-control-center
  Depends: empathy
  Recommends: clementine
  Suggests: cinnamon-control-center
 |Depends: buzztrax
  Recommends: banshee

I look around in Preferences and there's nothing there to select/switch codecs. I'll see if I can find anything on their website.

Fun fact: he played guitar on quite a few Beach Boys songs. I got to see him in Vegas in 2006 (or maybe it was 2007).

I've been using Pale Moon for years and love it. If you run into any problems (because Pale Moon has diverged far away from Firefox things that work in FF may not work in PM, but there are usually alternatives) I'd suggest searching the PM forums.  Or post here (in off topic I suppose). I usually visit this forum at least once a day.

Well, I just retried it today before trying anything else, and everything installed like it normally does without any kind of messages.
So is everything good to go and I got a fully up-to-date system? ?

Can it be configured to only check about 1 minute after boot up? (Each boot up, that is.)