I guess it's a question of what 'The Forum' wants to actually create. If it's a proper, professionally produced CD, manufactured in units of a thousand then there are all kinds of things to resolve.
ie.
Who pays to make it?
Who would actually buy it? (apart from forumites)
Are the feature acts looking for fame (or just a bit of fun)?
Who gets any royalties? (if any)
IMO it may be cheaper (virtually free) to allow as many entrants in as wants to enter, choose each entrant's best song and use the forum expertise to produce and master the tracks that need it. Then create a bandcamp page or similar (like the Pawprint page) to showcase and offer downloads. If demand is strong, CD's can be made at a later date or people can download and make their own.
I guess if it happens, we need to decide if it's for fun or for fame (& money)
The money route is serious stuff and would require investment, with possibly no return.
The fun route is still serious, because it's a showcase for the talent and ability of the forum, but is open to far less risk.