Your HP PSC 1510 printer is a multifunction printer. I have installed this very printer on Linux. To get all the features to work you will need to make sure you have the latest HP HPLIP package installed. You can go to http://hpinkjet.sourceforge.net/
to get the HPLIP file. You will need many other files such as Sane to get the scanner part working. Make sure you have an available update repository available online to get the needed files.
Your sound, first go to www.alsa.org
and read all about the ALSA sound system. I recommend that you use ALSA exclusively for all your sound. Make sure you run alsaconf from the command line to configure your sound system and then refer to alsa.org for any settings preferences.
Post back with your results.