Special characters

how can i save the symbol :heart: or any other special character in tags? instead of anything like :heart: there's a default windows square. <_<

do you use utf-16 encoding?
and then: the target system has to feature the same font. e.g. if you found this character in a special font like symbol or so, the target system would have to have that installed as well.
so it could be a problem that special characters have a special meaning on other systems and are thereform masked to avoid trouble.

ID3v2.4 UTF-8
thanks for such massive reply )