stereo on mp3 playback

[andy <geek_show@dsl.pipex.com>]

Hi

When playing CDs on my Lenny system, I get great stereo. However, 
whenever playing mp3s - even those that I have ripped myself in stereo, 
I don't get stereo at all: music only comes out of the right speaker, no 
matter which application I am using for playback. I am using ALSA and as 
far as I can tell have the basic arrangement set up properly. I ran 
alsaconf and selected the correct card, and then alsamixer and adjusted 
the settings: the CD still plays in stereo, but the mp3 players not.

Can anyone give me a steer in the right direction please?

Thanks

A

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