Ubuntu Studio / ArtistX 1.4?

Hi all ...

I'm NOT a creative enough individual to use them myself - more mechanically talented than able to convert artistic side into music/art ...

I have afew friends who ARE talented in that way though ... and have a few extra systems "laying around" collecting dust. They're all P4 class desktops in various sizes and connector types. I have a local Boys and Girls Club just down the street that I wouldn't mind donating a couple systems too also.

So, here's the question (Took You long enough!!) - combination Linux geeks and Musicians ... I've been able to dload and burn 3 seperate distros from an article about Multimedia distros, they are "dyne:bolic", "ArtistX V1.4", and "Ubuntu Studio V13.04".

I'm experimenting with these three in multi-boot setups on some old hrddrvs, and will be setting up to a 250Gb IDE drive with 3 partitions at 80Gbs each. But I've seen that both ArtistX and UStudio are based on different versions of Ubuntu Studio (the multiboot menu lists ArtistX as Studio 12.10).

My main question is that fir the setup to work in the BnGClub environment I would need full multi-user support, across all 3 boot OS's ... Is there a way to create a list of users and their permissions files in a single location that can be accessed by all 3 of these OS's to avoid all the kids and the SU being done in triplicate?. Especially since the partitions will prob'ly fill quickly due to the nature of these files in general.

I'd also like to know if it's possible/simpler to trim down to a single UStudio/ArtistX install that can install/config the amount of programs in ArtistX and the stability of V13.04 UStudio (basically cross-install all the software from ArtistX into the new UStudio's core) without re-dloading and installing them individually, creating an updated ArtistX basically.

Thanks!!, JW