I'll lay my cards on the table... I use the MX Linux build toolchain to build AV Linux MX Edition ISOs, in general the most straightforward way to build ISO's is to use packages from MX Main repositories..
Here's the conundrum: PipeWire in MX-23 Main (sourced from Debian) is outdated, it's 'pw-jack' functionality has several bugs and it does not have IRQ threading and many of the most recent features and improvements that have found their way into PipeWire's recent 1.0.0 'stable' release. Very wisely the MX devs and Packagers do not roll the dice with dropping new core system packages into MX Main repos so when PipeWire 1.0.0 enters MX (which it will soon) it will go into MX-23 Test Repo where it initially should of course! In my little world it's a bad idea to build ISO's with MX Test Packages and PipeWire 1.0.0 is not going to get into MX Main repo unless it sees a lot of testing to vouch for it's stability and even then there is no guarantee, without testing and confirming it is safe and doesn't break any functionality there is no chance at all, sooooo...
If you are interested in helping get PipeWire 1.0.0 into the Main repos for your own reasons or if you take pity on the terrible plight I'm in...

Glen - AV Linux Maintainer