Do you have apt-get installed? If not go
to this website. Apt-get is not needed, but trust me, it comes in handy so much. Follow the instructions on the website for installing apt, with the following exceptions.
- Do not do the following step. 'apt-get dist-upgrade'
- Do the following step after doing the "apt-get upgrade"
'cd /etc/apt/sources.list.d
su
<root password>
rm *.list
<y if prompted>
tar -xf /path/to/repo.tar'
Then, when you're finished with that, go to
this website. Install Lame and any other packages you want to install. To do this, go to the command line, type 'su', type your root password, and type 'apt-get install packagename' where packagename is the name of the package you want to install. Here's an example
su
<root password>
apt-get install lame
Make sure you install all the mp3 codec packages. This should solve your problems.
[EDIT]
I suggest getting Beep Media player, bmp, for your mp3 or any other audio. This is directly related, but I recommend vlc media player for any video you might play.