assuming you have tried the normal kernel versions of
a sound card drive, search for alsa. they are a set of
alternate linux sound card drivers. You can install those
for your next attempt.
mplayer is the best "movie player" can play divx movies
of all sorts and dvd's. i think that site is www.mplayerhq.?,
i don't know, but search for mplayer.
if by emulator you mean windows emulator, there are
several versions of wine. some cost money and some
don't. there are also some cpu virtualizing programs,
like vmware and win4lin that you can install under linux,
and install windows into them. they cost money.