Unable to update ubuntu unix 10.10 media codecs in slow speed GPRS internet

Unable to update ubuntu unix 10.10 media codecs in slow speed GPRS internet : I am using Ubuntu unix 10.10 all works well except media i.e. MP3 , CD , DVD nothing plays , because ubuntu 10.10 does'nt installs any third party media plugins except .ogg , it should have to update with ubuntu software center , but i have slow speed gprs internet then how to update my media plugins in offline environment ?