Hey, these maps are pretty good! really great work all around! ..At least, if you're not in software. Some maps seem too big for the game to handle with some servers, and a bunch of skyboxes seem to either bug out entirely or just dont show up, which really needs looking into.
..But PLEASE, optimize your music files. It's what's causing the whole thing to bulk up in size, which even exceeds maxsend when connecting to a server. If you happen to have Audacity on you, or some other audio editing software, try converting the OGG files to quality 0 to lower each OGG filesize.
Some of these music files seem be longer than they should be when looping, which might be effecting the filesize as well. Try trimming some audio or use LOOPMS on a shorter music file to help with this!