Multiple ASIO Devices?

Hello. I have SONAR 5.2 on an Athlon 64 3000 machine - with a Line6 GuitarPort and an Audigy2 ZS soundcard (please hold the applause).

Experiencing a whole bunch of crackling with the WDM mode with the Audigy. Trying to switch to ASIO mode, but it forces the GuitarPort into action (i.e. I can't use the Line Ins on the Audigy 2 ZS).

So, I have the following questions:

1) How can I choose between using the SB ASIO vs. GuitarPort?
2) Is it even feasible to have two ASIO-devices on the machine at once?
3) If I were to configure SONAR to utilize the SB ASIO, would that prevent me from recording with the GuitarPort?
4) Am I wasting my time?

TIA! Feel free to flame the noob if need be :)

Sonar only supports one ASIO device at a time as you know WDM will handle multiple audio devices. The only suggestion I can give on the crackling is to make you latency higher and re-profile your audio card this may help.

Does Sonar support multiple ASIO firewire devices of the same brand by any chance?

Does Sonar support multiple ASIO firewire devices of the same brand by any chance?

You can't use more than one ASIO driver simultaneously in any app - it's a limitation of ASIO.
However, there are situations when several interfaces can share the one ASIO driver - this depends entirely on the qualities of the driver.
With M-audio, for example, you can use up to 4 interfaces from the Delta range, even mix different types, using the same ASIO driver, and all interfaces appear in the Delta ASIO control panel.