Okay, I'm assuming the following, since the specs are a little unclear:

• you can separate one record from another
• the first two fields are consistently quoted
• the third field always begins and ends with a quote
• the last two fields are consistently quoted
• only the third field can contain returns, commas or quotes

#!/usr/bin/perl
use strict;
use warnings;

my $data =  do { local $/ = undef; <DATA> };
my @fields = $data =~ /"(.*?)",\s+"(.*?)",\s+"(.*)",\s+"(.*?)",\s+"(.*
+?)"/s;
print "RESULTS:\n";
print ":$_:\n" for @fields;

__DATA__
"data", "moredata", "the notes field "with unescaped quotes" and
lets have a hard return in here
in a few places,
and while we're having fun with that, why not
have some "random, commas too!", "lots more data", "lastfield in the r
+ecord"
[download]

The first two and last two captures of the regex are non-greedy, and the middle one sucks everything up. Hope this helps...

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