Comment 3 for bug 122042

It doesn't work here, after doing another apt-get update for good measure. It looks like the -dev package never got updated after changing the version of the lib. All of this is only indirectly related to the mplayer package, but I post this here only to demonstrate that I'm not hallucinating (other than calling this "libpulse0-dev" erroneously):

$sudo apt-get install libpulse-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  libpulse-dev: Depends: libpulse0 (= 0.9.5-5ubuntu4.1) but 0.9.5-5ubuntu5 is to be installed
E: Broken packages

I never did manage to resolve this, and the mplayer source package remains unbuilt so far.