Editing tags of files on the VOX Cloud


I have uploaded several music files (both mp3 and flac) that have Japanese tags (title, artist name). When reviewed on VOX Player on iPhone, some of them look fine but others have issues, such as song titles are completely ineligible (double-byte characters become garbage) or the artist name is not correct (for example, Artist name “Mamalaid Rag” is shown as “Mamalaid Rag, Mamalaid Rag”. The same file looks completely fine if transferred to iPhone via file share).

These may be bugs, but is there any ways I can edit these issues on either iPhone or on web?