Thanks for your response Tsetso. I actually had a conflict with alsa when I installed Zoiper
Don't remember the exact output, but it said something along the lines of: "alsa-lib [version].i686 conflicts with "alsa-lib [version].x86_64"
What I did was to update the x64 version of the package and then tried to install the i686 package again, which it did succesfully this time.
It let me install the package but now I have the problem with audio.
Is there any way to remove/reinstall the packages? Would you recommend doing it? Please feel free to add your recommendations, I'm lost at this point of the troubleshooting, I have reinstalled the system several times and tried to install Zoiper every time without success.
If you need it, I can specify the process that I used to install Zoiper Classic.
Let me know if there's any information/command output that could help you.
Would really aprecciate your help.