mp3 joint stereo adding into library results in trouble

[Orbis]

Hi,

I missed mp3s in the library and so I found out the following:

- MP3 with only "Stereo": works fine.
- MP3 with "Joint Stereo": cannot be added into the library. But it can be added in playlists. And there it's visible and the music plays. However, a transfer/copy from there to the library is also not possible.

If I save such a "Joint Stereo" file with an sound editor as "Stereo" file than I can add it into the library. Do you have any idea to solve to add "Joint Stereo" files in the library?

I hopefully look forward for an solution.

best regards
Orbis