I have read just about every message in the forum on this subject (I think), including Nudel's FAQ, but I still have a problem.
By setting the dblclk event in DOpus to Play, I can play a single MP3 file in the viewer plugin. So far, so good.
However, if I highlight one file, then select File/Play, Windows Media Player takes over and plays the file. This, despite having Media Player Classic set (and confirmed) as the default file handler for MP3 files.
If I highlight several files, then select File/Play, Windows Media Player again takes over, skims briefly through the files in order, playing a few seconds of each, until it reaches the last, which it plays in full.
It had been my hope to build a Play button to play several selected MP3 files one after the other, using the MP3 plugin. Is this not possible? And anyway, where does WMP get ito the act?