Instead of changing the tildes, use them as anchors to change the characters around them. 
s/(\w)~(\w)/$1\n$2/g

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--marmot

UPDATE: Changed second $1 to $2. Stupid fingers...

UPDATE2: Just realized it was wrong, as well. What was I thinking??? This should do it.

s/~/\n/g;
chomp;

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In reply to Re: regex replacement help by furry_marmot
in thread regex replacement help by mkenney

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