Zevele, I'm not sure I understand your questions
correctly, but here's my answer anyway.
The Creative Sound Labs Soundblaster Extigy hooks
into your USB port, and you can still keep and use
any internal soundcard(s) you already have.
You HAVE to install the Extigy drivers, but you don't
need to install all the software (I don't remember if
you get the choice of installing only the driver). The
Creative applications aren't very good in my opinion, and
since you're already using Media Jukebox there's very
little need for the Creative Play Center.
Whenever you plugin the Extigy to your USB port it
becomes your default soundcard, and when you unplug
it your internal soundcard becomes the default.
It works well with Windows 2000 and Windows XP, but
I haven't personally tried other Windows versions with
the Extigy.
If your application supports choosing your audio output
explicitly then you can use your internal soundcard even
if the Extigy is plugged in, if that's what you want;
Media Jukebox and MusicMatch Jukebox can do this, but
I don't think you can choose the output soundcard in
Windows Media Player.
The Extigy will play anything your application cand send
to it as Wave output or AC3 output, so e.g. anything you
can play in Media Jukebox, MusicMatch Jukebox, Windows Media Player,
or similar applications is OK including APE and OGG; the
Creative Play Center however cannot play APE and OGG
files.
- Roar