Ok!!!! When I try to reopen beats I made in which I used external wave files- I keep having to search for them and reload them...WHY???? Can someone help me!!

That is strange. I take it that you are not moving the samples on your hard drive after you have loaded them into a Reason device?
Does it happen with all wav samples? and what devices are you using to load the samples into?

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i think i figured it out! I changed the name of the folder a few nights ago.