Hi,
Audacity now supports I/O via pulseaudio, but needs wider testing. If
you can:
yum --enablerepo=updates-testing install audacity alsa-plugins-pulseaudio
or if it isn't there yet, grab it from koji:
http://koji.fedoraproject.org/koji/buildinfo?buildID=76957
any comments, success or trouble can be added to:
https://admin.fedoraproject.org/updates/audacity-1.3.5-0.9.beta.fc10
Cheers,
David Timms.