Firefox Can't Stream Music on Sirius.com

[Donald iddings]

Feisty 7.04 on a T60 TP, Got satellite radio & as part of the mo
agreement you get an online account where you can stream music from
website, has always worked fine on windoz IE but Firefox the site seems
to open ok but can't start any music, seems like needs maybe a
dependency or plugin? Checked for firefox plugins for this web site but
none are recommended. PC plays music cd's just fine, plays internet
radio from Rhythmbox just fine? any direction

-- 
iddingdj05 at comcast.net
100% Ubuntu Feisty 7.04