However entertaining this thread may have been, might I be so bold as to make a suggestion? It may end up being more work for whoever moderates this thing, but it is workable. I've read where other boards do it successfully.
Have each participant fill out a survey of sorts, listing whether or not they prefer to send/receive cds or links to playlists, or are okay with either option, as well as whether or not they're financially capable of exchanging cds internationally, if they choose the cd option.
If there happen to be uneven numbers of people making such requests, there are usually people who are willing to send to more than one person in each round, or, you could go with a 3-way swap.
If this is two much work, maybe more than one person could do the modding?
: suggestion:
Cori, I laughed out loud reading your posts about holding the mic up to the radio speaker. Man, those were the days. lol