[arch-general] Howto find alternate ABS source download mirror?

Guys, Where do I find a list of ABS download mirrors? I was working with ffmpeg and the download from ftp.archlinux.org was painfully slow due to the throttled connection. Is there somewhere mirrors for ABS sources are listed? Usually it doesn't matter because most sources are relatively small, but with packages like ffmpeg (50 meg), the throttling difference can be extreme. Thanks. -- David C. Rankin, J.D.,P.E.