It seems like there is a lot of time between each. Also, there is no reason that more than one can't be going on at the same time as long as there is avalable server space somewhere.
On a side note, would anyone be interested in more of a contest version with a small cash prize? I am in the beginning stages of an album for a band right now. The band thinks it would be fun to post one song to see what everyone comes up with. This one would have no rules, just end results. Add midi, replace drums, whatever. We want to offer some sort of actual prize since these tracks are going on an album which means the winners mix may get used, may not, or maybe we will just take some ideas form it for our own version of that song. Either way, the winner would get some sort of prize and would also get credited on the album if their version was either used, or if we took enough influence from it to change our own mix in a certain direction due to it.
What do you guys think?
The only rule I would have is that by uploading a mix than the uploader is releasing that material to us to do with as we please. Also, only the winners material would have the possibility of being released as is and we would pay expenses to have them ship us a CD with the song in an audio format as opposed to mp3.