I tried to install Skype on my ubuntu 12.10 via command line

$ sudo apt-get install skype

I received this error :

The following packages have unmet dependencies:
libasound2-plugins:i386 : Depends: libasound2:i386 (>= 1.0.25) but it is not going to be installed
skype-bin:i386 : Depends: libasound2:i386 (>= 1.0.23) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

When I tried the suggestion,

$ sudo apt-get -f install

I get the following error :

Unpacking libasound2:i386 (from .../libasound2_1.0.25-3ubuntu3_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/libasound2_1.0.25-3ubuntu3_i386.deb (--unpack):
trying to overwrite shared '/usr/share/alsa/alsa.conf', which is different from other instances of package libasound2:i386
No apport report written because MaxReports is reached already
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/libasound2_1.0.25-3ubuntu3_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Configuration of my ubuntu is as follows :

$ uname -a
Linux sumitb-pc 3.5.0-21-generic #32-Ubuntu SMP Tue Dec 11 18:51:59 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Please help me out here ! :)