I moved your a cappellas to, well, the a cappella section.

Also, rather than download 12 individual instrumental tracks, it would probably be more conveniant for remixers to see these tracks combined into a ZIP archive (or a couple, considering the size limit is 10Mb)

for several of these it might also be useful to consider which are actually mono (like the vocals) and upload them as mono, rather than stereo, This would reduce the upload/download by exactly half.

just a thought…