I jumped up (clean install from Fedora 14 32-bit) to Fedora 17 64-bit. Installed the Skype RPM, found the 101 32-bit dependencies and the pulse-also bridges. All the stuff that makes it work for most people.
No test sound, though. I'm presented with a raft of options, including several "default" generic devices, hardware-specific devices and "pulse", but none of them give a squeak. No ALSA device option, though.
I know that pulse itself is functioning, since "paman" can play test output when its ALSA output option is selected. And the lower-level audio stuff is just fine - installed transparently and all other audio-using apps are OK. Only skype remains silent.
Anything else I can test?
Same(?) problem here. I'm running F17 X64 OS on a brand new Dell Optiplex 390 (I5 processor). clean install of F17 X64, clean install of Skype X32, video works fine, all sounds work fine on all other apps. ex cept Skype. The 'Skype test call' recognizes the sound problem and flags the lack of playback.
....installing pulseaudio (see roam_tech's advise) did the trick.. All is fine now. :-)