Yeah man, the cinematics aren't that big.
A compressed disc image would be under the maximum size, I reckon.
In the mean time, before it's sorted out, is there a way to get the cinematics - using FRAPS or something - onto the Abandonia Youtube channel?
Maybe just the rollercoaster or mine train as a teaser..?
Just as Bullfrog's Syndicate had a load of cheats (activated by a call statement buried in the relevant section of the .exe) that were dependent on what you entered into the name box, Theme Park is no exception. Molyneux's coding team's habit of making cheating impersonal, by forcing the player to trade their free will - their own name - for the complete ownership of a game.
Unfortunately, this trade-off always tends to mean that your enjoyment of the game is lower as there's no challenge.
Because of this, I don't suggest cheating at Theme Park - having access to everything on demand - until you've given it a good play through a few parks.
Or fancy a break from managing and just want to build to your heart's content. 
Money, all rides, scenery and shops cheat:
Enter your nickname as "HORZA" and start a new park.
The next time you're asked for your nickname, enter it as "HORZA".
From now on you can get $50,000 by pressing Ctrl-C.
Press Shift-Z for all scenery, Ctrl-Z for all the rides and Alt-Z for all the shops.
It is possible, if you know what you're doing, to use a Hex Editor, such as BEAV (google it), along with Windows Debug, to edit saved game files to - for example - give yourself massive lump sums of cash.
If you decide to give that a go, make sure you back up your game file first by making a copy.
Theme Park Debug Mode (ie. cheats)