you’ll need a theme that supports both linksheets for your foldersheets
and XML moviesheets for individual files, I know that goodbye black mamba does support this
GBBM does support XML files, but do you need them on the SMP? I don’t have an SMP so am not very familiar with the exact setup, but that theme works well (on the HUB at least) without using XMLs. You can just put the linksheets in the root of the theme and they get called up when you scroll over the movie cover. GBBM does still support XML files if you want to use them, or if it is required on the SMP. Hopefully KAD79 can answer that for you.
Like the post above said, a folder linksheet would would have no extension at all (you will remove the “.jpg”. A film or TV show linksheet needs to have the same extension as the video file (EX: moviename.mkv). The linksheets must be the EXACT same name as the video for this to work, including capitalization if I recall correctly.
With only 30MB for the entire theme directory, you are pretty much stuck just making genre and subgenre folders. I have a lot of movies and TV series (on a HUB) and my GBBM folder is 482MBs. You are going to have to be very deliberate in what you choose to make linksheets for with that size limitation. If you go with GBBM, the theme itself is around 15mb and the typical linsheet from that template in Thumbgen will be around 225kb. I am guessing you can probably make 50-60 linksheets if you manage your theme directory well. If you are ambitious, you could carve up the theme a bit to reduce the size of it’s main files giving you some more space as well.
Take my comments with a grain of salt as I have not used the SMP, but am quite familiar with the theme and the linksheets and templates for it. Hopefully something here is helpful
Good luck on getting this setup.