My thoughts on the old Blond DJ:-
Competitors, leave it open to everyone rather that a conference system.
Voters, first round voting open to anyone, even those not participating (you’ll see why below) and obviously two songs requires two rounds of voting.
Bring in a deadline for each round, 24 hours from last song being posted.
In the event that not everyone has voted, so long as at least 75% of participants (or equivalent for first round) have voted, then the results stand.
50% loss each round, even with 32 players that’s only 6 days (32, 32, 16, 8, 4, 2) which is three days shorter than the one we just completed.
The average time for songs would be around the 4 minute mark even allowing for the odd 6-10 minute song, meaning potential voters need to find about 2 hours for each of the first two rounds to listen to all the songs, assuming they listen all the way through on each one. Very few people are so busy they can’t find two hours of downtime a day for two days, especially if we kick off on a Friday evening.