I'v found a wired problem while using '\\' to set multiple artists. Some chinese characters will not work with \\. Everything behind \\, including \\ itself, will just dispear after saving the tag.
For example. If i input 'xx\\zzz', after save there only lefts "xx", "\\zzz' are simply eaten. But if i add a space, make it like 'xx \\zzz', then it will be all fine.
This happens while using chinese character and editing mp3/flac/ape tags. English char seems doing good.
PS: thanks for building such a handy and useful tool.