This news is a tad outdated as changes were made a few days ago to XM as far as an upgrade in sound quality. Thought I'd post it here and then share my thoughts afterwards.... Being one who has been very critical of the poor sound quality of satellite radio when compared to CD music, I took some time to listen to XM over the past few days to see if I could hear any improvements. I have noticed that sound quality has marginally improved. Music does sound a bit fuller, and for once in a very long time, the muddiness that was present in many of the decades channels (60s, 70s and 80s) seems to be a bit more vibrant. The sound quality still doesn't nearly approach what it was 5 years ago when the service was in its infancy, but it was so apparent over recent months that something had to be done to fix the degrading sound quality of XM and at least this seems to be a start. Very interested to see if any other listeners have sensed an improvement in overall sound quality.