Listen doesn't load oga files

[marianom]

Hi everyone, I just installed Xubuntu (9.04, 32 bits) in an old machine I want to send to my brother. I uploaded a few oga files and I want them to appear in Listen's library. However no matter how do I select them (by folder or name) they don't appear in the application (not even if I double click the file from thunar).
To my surprise it does upload a folder with mp3. The only difference I can see is that this folder has a m3u file. Can it be possible Listen only uploads playlist files? I assume this is what's going on although I will appreciate if seasoned xubuntu gurus can confirm this and add a workaround.

TIA,
Mariano.

[4Orbs]

In the menu at the top of Listen, under Music did you try Reload Library?

[marianom]

Not only that, I also restarted the app to no avail.