Download cue (ticket)

Hi everybody,

right now Im working on a site that deals with great amounts of downloadable files - some of the ma very large. In order to maintain a consistent level of bandwidth Im trying to prevent that more than one of these files is being downloaded at the same time… sort of like a download cue or a ticketing system.

There are other models, for example that only one large file may be downloaded within one hour…etc.etc.

Do you guys have an idea of how I can solve this problem effectively?

Thanks in advance,