Using MXP (package) files in Flex?

So, many of components and code libraries of different kinds and flavours get distributed in the lesser known MXP format, which many believe makes for "ideal" distribution. My problem is I am a skilled ActionScript/Flex/Flash developer who not always has access to a Windows box, and even if I have, I can't seem to find any valuable information on how to open/extract content in this format. The only thing I know is that it is obviously a drag-and-drop operation in Flash CS* to import and use these files, but most likely I will be using Flex. Is there any chance of using these files in Flex instead? I have to use several code libraries that are only distributed as those MXPs, which does not seem to be a very "open" format.
Thanks.

Thanks.
MXP files do not appear to be any variation of ZIP archive format.
I will be using whatever as long as I can make use of the component itself, which is packaged as an MXP. Inside this MXP there is an MXI file too. I do not have any control over the distribution format of this component, these are developed by another party. All I need it to make use of the component(s). If this involves opening the MXP, extracting the MXI, and getting an ActionScript or SWF bytecode out of it, fine. I really do not care much for the format, I just need my application to make use of the component itself.
Are there any tools that convert an MXP package to something less binary perhaps? Or something that Flex can use at least?
After all the component is the same bytecode that Flash Player uses anyway, compiled from either Flex or Adobe Flash.

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