I installed Second Life 1.18.4 (3) on Ubuntu Gutsy 7.10. Everything seemed fine for the most part, however the audio from music streams in the game was very crackly. Second Life is the only application with crackly audio, all my other applications seem fine so far.

I corrected this by installing the “esound” package, and then rebooting my machine.

$ sudo aptitude install esound

After rebooting and trying again, sound now works perfectly in the game.