How to accomplish this with a few different CMS' and some Blogs

Hey and thanks to all who can join in on suggestions.


What I want to accomplish may seem simple to some, but I'm having a hard time figuring it out.

Firstly;
1. Should I point all sites to the same ".XML" sitemap file or should they all have there own?

Secondly to the question;

1. How to setup a few wordpress' (I can't give an actual number yet, maybe 2-3 though), a faq's site, and possibly a dolphin or drupal (I may add a zencart later). Thing is on at least 2 of the wordpress', I need sub-domains to serve audio/video files from. Sort of like this:

http://'audio/video'.mysitedomain.com for 'wp1'.mysitedomain.com/ - this is where the audio/video files are stored
http://'wp1'.mysitedomain.com/ - this where the audio/video files are shown [the actual site as I should say]
http://'wp1installation'.mysitedomain.com/ - this is where "WP" is actually installed

Then the other site will look as:

http://'wp2'.mysitedomain.com/ - this is where 2nd WP 'URL' is
(the WP installation needs to be http://'wp2installation'.mysitedomain.com/ )
http://audio/vid.mysitedomain.com' for 'wp2'.mysitedomain.com/ - where the 'WP2''s audio/video files are stored

http://'dolphin'.mysitedomain.com / - this is where dolphin is installed and shown

http://'drupal'.mysitedomain.com / - this where drupal is located and 'maybe' installed
alt: http://'drupal-installation'.mysitedomain.com/ - the drupal installation maybe

my server is already set up for *.mysitedomain.com wildcards. I just need suggestions on how I should go about getting all of these to run correctly? Once again, thanks to all who can help

the site is push36 dot com