Sound in Linux Ubuntu?

info: Dual booting Win XP Pro SP2 + Ubuntu 7.04 (Feisty Fawn) on a HP Pavilion zd8004ap (zd8000 series)
BACKGROUND:
Wifi didnt work originally - Fixed
All Movie/Audio Players froze when I tried to play anything - Fixed
Sound and +/- working at this stage (must doesnt light up)
NOW:
Mute button is alight in linux no sound in linux sound in windows?? i am really confused and really annoyed at linux at the moment. Its a great OS if it works! Any Ideas as to why my sound card/settings suddenly wont work?

Answers:
Did it get muted in your mixer, possibly??

Try any possible sound devices you can - CDs, DVDs, internet radio, flash websites, etc. See if you can narrow down the situation a little bit..

The answers post by the user, for information only, RunQA.com does not guarantee the right.


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