Question about using container to load several swf's

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I have a project where I want to have a container stage load several external swf’s that use external actionscript 3 files and xml files (example: a ticker scroller, a video jukebox, a news scroller, a calendar) and have them all display on the same container stage at the same time. I have tried to make new symbol and link the external swf as a library item but I keep getting errors when it tries to publish. Does this sound like at least the right way to be trying to set something like this up (linking via the library) or is there a better way to do this?