Save it while it's hot!
This was what I was trying to download when I discovered that there were serious problems with my system, which is when I discovered that on my C: drive, there was 0% disk space left, of 2 (1.95 effective) gigabytes. This led to me doing some serious housecleaning, and shuffling old large documents and musics to my F: drive, which is where I keep all downloaded musics & so forth (which drive has 75% of 2 gigs remaining).
I spent most of the morning cleaning and defragmenting, and managed to reduce the fragmentation down to those files that will never defragment because they're in use 99.99% of the time, especially while the system is powered up.