Observed that Oppo has some funny text (characters) being displayed on the screen when playing some FLAC music files. The original text for artist, album and song is non-English and Windows displays the text (characters) properly. When I put these FLAC files on a USB disk and attach it to the Oppo, some of the text (characters) do not display properly. They're shown as squares.
The FLAC music files play fine and the album art displays properly.
The text isn't right.
Oppo advised that there is no support for UTF-8 formatting and text character set.
So another wish list item for the future Oppo is UTF-8 support.
P.S. Oppo customer support is excellent. Got a reply within an hour!