Hi Heribert,
I used to own a 22" BeoVision 6 and I can confirm that the sound quality for music was very, very good especially once the bass and treble settings had been increased. I much preferred the sound quality to that of my BeoSound Century.
Your 26" should sound even better as I do believe that it had better quality speakers in a larger enclosure! For music, I would use the radio stations on my SKY Digital box.
Hope that helps
Paul