Here's some food for thought,
Regardless of what audio device you are using, whether it be ASIO, Wave, or WaveRT, if you have that device assigned as your default system playback device and you are sending your DAW sound output to it there's a chance there's going to be a conflict in sample rate or "exclusive control' since mixcraft will be sending a fixed sample rate to the card and then the PC will also be trying to send any/all of its sounds including system "ding's and dongs..." at who-knows-what sample rate. My opinion is that it is best to have a dedicated sound playback device for your DAW.
I also notice that the moderators/staff here at Acoustica regularly recommend updating your internal soundcard with the most recent drivers; right or wrong, I've long since deleted the OEM conexant driver for my laptop's internal sound card and forced it to use the windows default driver which works great for me.
I agree that the M-Audio Fast Track Pro is more confusing than your internal sound card but itÃ”Ã‡Ã–s not too bad; the manual is short and pretty descriptive. When I first started I made a cheat sheet for several functions such as the A/B button (controls headphone playback of either channels â”¬Â¢ or â”¬Â¥) and the mix knob (turn CCW for hardware monitor of signals as they enter the FTP or turn CW to only monitor the processed sounds returning from your DAW, or leave in the middle to hear a mix of both).
Someone on the forum has recently posted that they have had great results with a behringer USB audio input device which is much more basic yet still uses ASIO drivers and can be had for about $30 at amazon.com; you might check that out. I think it was this device: Behringer UCG102 Guitar-to-USB Interface