If you're a music collector, and basicly care about the tracks themesleves and NOT for the items, the only reason to get this record, is if you want The Antidote track seperately. In the CD edition, it mixed a bit on the edges, with the previus and next track.
The Overlords - Sundown full version - can be found in the RIGHT PITCH (!!!) on the "Organic+" single from 1991.
The Shpongle track was taken from their album.
As for the eched size... It can't be played, anyway :-)

All I can say that it's a nice promo for a very nice compilation.