Podcast : MP3 file not enclosed anymore in RSS feed

Hello and first of all : Happy New Year 🙂

I am facing a major problem with my new WP 2.7 installation.

J’utilisais wordpress couplé à Audioplayer pour un podcast, qui fonctionnait à merveille depuis le début.

I was using WP + audio player for podcasting (www.freshnewsound.org)

And since WP 2.7, MP3 files are not enclosed anymore in podcast RSS feed. (Audioplayer is correctly displayed, sound is playing, but there is no download link in RSS feed reader such as google reader or netvibes + no mp3 is displayed in iTunes)

Any clue how to fix this??? I haven’t found any specific setting in WP2.7????
Thanx in advance