Hiya, I am a long standing jriver media center user on pc but have never had any luck with Linux.. I tried:
curl
https://git.bryanroessler.com/bryan/installJRMC/raw/master/installJRMC|bash
and got:
-s -- --mcrepo=noble --debug
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 59185 0 59185 0 0 93683 0 --:--:-- --:--:-- --:--:-- 93795
Debug: Running: main --mcrepo=noble --debug
Starting installJRMC 1.4.8
Debugging on
Debug: Running: init
Debug: Running: parse_input --mcrepo=noble --debug
Debug: Automatically using --install=repo
Debug: Running: update --mcrepo=noble --debug
Debug: Checking for installJRMC update
Debug: Not in a git repository or not the installJRMC repository. Checking for updates via download.
Debug: Current installJRMC 1.4.8 is the latest version
Debug: rm -f /tmp/tmp.4uXZbNvdFe
Debug: Detected host platform: ubuntu 22.04 amd64
Debug: Host platform: ubuntu 22.04
Debug: MC repository: noble
Debug: Running: install_external_repos
Adding universe repository
Debug: sudo add-apt-repository -y universe
Adding component(s) 'universe' to all repositories.
Hit:1
http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:2
http://gb.archive.ubuntu.com/ubuntu jammy InRelease
Hit:3
http://gb.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:4
http://gb.archive.ubuntu.com/ubuntu jammy-backports InRelease
Hit:5
https://linux.teamviewer.com/deb stable InRelease
Get:6
https://brave-browser-apt-release.s3.brave.com stable InRelease [7,546 B]
Hit:7
https://ppa.launchpadcontent.net/mixxx/mixxx/ubuntu jammy InRelease
Hit:8
https://ppa.launchpadcontent.net/slytomcat/ppa/ubuntu jammy InRelease
Hit:9
https://ppa.launchpadcontent.net/ubuntuhandbook1/dvdstyler/ubuntu jammy InRelease
Ign:10
https://downloads.iridiumbrowser.de/deb stable InRelease
Err:11
https://downloads.iridiumbrowser.de/deb stable Release
404 Not Found [IP: 78.46.90.112 443]
Hit:12
http://dist.jriver.com/latest/mediacenter jammy InRelease
Err:6
https://brave-browser-apt-release.s3.brave.com stable InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0686B78420038257
Reading package lists... Done
E: The repository '
https://downloads.iridiumbrowser.de/deb stable Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(

manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error:
https://brave-browser-apt-release.s3.brave.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0686B78420038257
Installing JRiver Media Center from remote repository
Debug: Running: install_mc_repo
Installing JRiver Media Center RPM key
Adding MC repository file: /etc/apt/sources.list.d/jriver.list
Debug: repo_text: deb [signed-by=/usr/share/keyrings/jriver-com-archive-keyring.gpg arch=amd64,i386,armhf,arm64]
http://dist.jriver.com/latest/mediacenter/ noble main
Hit:1
http://gb.archive.ubuntu.com/ubuntu jammy InRelease
Hit:2
http://gb.archive.ubuntu.com/ubuntu jammy-updates InRelease
Hit:3
http://gb.archive.ubuntu.com/ubuntu jammy-backports InRelease
Hit:4
http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:5
https://linux.teamviewer.com/deb stable InRelease
Get:6
https://brave-browser-apt-release.s3.brave.com stable InRelease [7,546 B]
Hit:7
https://ppa.launchpadcontent.net/mixxx/mixxx/ubuntu jammy InRelease
Hit:8
https://ppa.launchpadcontent.net/slytomcat/ppa/ubuntu jammy InRelease
Hit:9
https://ppa.launchpadcontent.net/ubuntuhandbook1/dvdstyler/ubuntu jammy InRelease
Get:10
http://dist.jriver.com/latest/mediacenter noble InRelease [3,617 B]
Ign:11
https://downloads.iridiumbrowser.de/deb stable InRelease
Err:12
https://downloads.iridiumbrowser.de/deb stable Release
404 Not Found [IP: 78.46.90.112 443]
Err:6
https://brave-browser-apt-release.s3.brave.com stable InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0686B78420038257
Get:13
http://dist.jriver.com/latest/mediacenter noble/main i386 Packages [872 B]
Get:14
http://dist.jriver.com/latest/mediacenter noble/main arm64 Packages [2,600 B]
Get:15
http://dist.jriver.com/latest/mediacenter noble/main amd64 Packages [2,638 B]
Get:16
http://dist.jriver.com/latest/mediacenter noble/main armhf Packages [855 B]
Reading package lists... Done
E: The repository '
https://downloads.iridiumbrowser.de/deb stable Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(

manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error:
https://brave-browser-apt-release.s3.brave.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0686B78420038257
Error: Package update failed!
Error: JRiver Media Center installation from remote repository failed
Please help,, Ta