there are various network sound systems in linux. you can play on one machine and use the speaker from another. i think rplay, nas(?), mas,... are such tools. another way is to provide your ogg or mp3 collection via an httpd like apache by a stream to clients.
you can think of ssh like telnet but encrypted and with more options. on one side you'll need the sshd and on the other ssh. if you're new to linux www.tldp.org
will give you lot of useful howto's about various linux issus. maybe there already is good documentation in your /usr/share/doc directory.