updates not installing

[clivesgarage]

Hit:1 http://archive.canonical.com/ubuntu focal InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit:3 http://repo.linuxliteos.com/linuxlite emerald InRelease
Get:4 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Ign:5 http://ppa.launchpad.net/osmoma/audio-recorder/ubuntu focal InRelease
Get:6 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Hit:7 https://repo.protonvpn.com/debian stable InRelease
Hit:8 http://ppa.launchpad.net/savoury1/chromium/ubuntu focal InRelease
Err:9 http://ppa.launchpad.net/osmoma/audio-recorder/ubuntu focal Release
  404  Not Found [IP: 185.125.190.52 80]
Get:10 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
Get:11 http://us.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [672 kB]
Get:12 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [1,889 kB]
Get:13 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [930 kB]
Get:14 http://us.archive.ubuntu.com/ubuntu focal-updates/universe i386 Packages [684 kB]
Reading package lists...
E: The repository 'http://ppa.launchpad.net/osmoma/audio-recorder/ubuntu focal Release' does not have a Release file.

[stevef]

You appear to have a version of audio-recorder which isn't being maintained any more.

The update process on your system stops because it can't find an up to date version.

If you need audio-recorder, it looks like there is a newer release which is currently getting support.

older version
https://launchpad.net/~osmoma/+archive/u...o-recorder

There's a link on that page which points to the current version which is
https://launchpad.net/~audio-recorder/+a...ubuntu/ppa
There's instructions on that page on how to change the PPA.