If you download a lot of files from free file hosting sites like Rapidshare or MEGA, check out JDownloader (http://jdownloader.org/home/index?s=lng_en). Its interface is somewhat ugly, but it makes downloading many files from such sites way easier. It can monitor the clipboard for copied links, and it automatically pops up a window for you to enter a CAPTCHA when it’s necessary. I think for some sites it can even solve the CAPTCHA for you.
They separated out the video streams and audio streams, so now the only 1080p link you can get is video only (and it uses a different ID to the old 1080p videos, so support needs to be explicitly added for calculating the link).
I ended up writing a wrapper around youtube-dl and ffmpeg to download the MPEG-DASH video and audio streams and mux it because of this. It was a spur-of-the-moment hack, so don't expect error handling.