For about a month after getting MC6 I was running things kinda like you are, only I didn't have ANY audio interface. I was direct in to the computer with my mic via usb, and direct out of the computer via headphones/speakers. Bad idea! It worked ok at first, but once I got into doing more stuff, everything started to fall apart. Hard to say what causes things to change, but I suppose we're both lucky it worked at all.

It has nothing to do with SI Drums. It is strictly a Record Mode/Driver issue.

Well Im going to nip this in the bud now and follow both of yours advice...I am going to purchase an interface.  Do either of you have any suggestions as to which ones I can look into and I will pull them up on line and look at them.
 
I originally stayed away from the extra interfaces because I wanted to try and get the hang of what I was doing...I knew absolutely nothing about anything when I first bought MC6...I still dont know a whole lot, but I have learned a little bit.
 
I was thinking of upgrading to the sonar X3 also...mainly because they offer the tech support.
 
Oh and I agree, griz...it appears like i was just lucky initially.  I even went back into some old tracks that I recorded over and nope they wont do it now...I hit record and it actually records all of the tracks into one.  Lol...i just threw my hands up and said forget this...

A lot of variables go into an interface purchase. Number of input/outputs, mic preamp and driver quality being probably the most important. Does it need to be a MIDI interface too? On a budget? If I have to recommend hardware Focusrite, Roland, Presonus, Motu and RME would be on my short list. For starters the Focusrite 2i2, Roland Duo-Capture EX or Presonus 22VSL are relatively inexpensive solid devices with good drivers. If you need more I/O all the brands mentioned make larger devices too. Keep in mind for best performance most interfaces will want to work in ASIO mode which will prevent you from using the Mustang via USB and monitoring through the audio interface at the same time.
 
If you are thinking about moving to X3. You might want to post for recommendations in that forum. Many more readers, many more opinions.

@scook...gotcha...thanks that will give me a few to look at.
 
As far as the amp goes...all i would do is run the amp thru the interface also, right?  So i plug the guitar into amp and then amp into interface?  Verses amp directly to the computer.
 
Oh and the midi interface...do you mean like for a midi keyboard?

Generally, audio interfaces have at least one Hi-Z input for direct connection to a guitar. The amp would only connect directly to the interface if the amp has a line out. In some cases, using an amp line out is not very good. Depends on the amp. Most using an amp would record it with a microphone. You would not use the USB from the amp for audio at all.
 
MIDI would be for a keyboard. Almost a necessity for DAW work even for severely keyboard challenged people like me. A lot of MIDI keyboards these days do use a USB connection so having a MIDI connection built into the interface is less of an issue. Using a USB connected keyboard is not the problem your amp is because a MIDI device is not treated as an audio interface.

Hmmm...I figured that if I was using a midi usb that I would run into the same problems when recording, but I guess they are set up different.
 
My amp does not have line out.
 
So, Im a little confused with the guitar to interface.  Are you saying to essentially hook the guitar to the amp, then a mic to the interface and then use that to record?  My only problem with that is that I use headphones a lot, because alot of my recording is done at night...I was hoping to not have to go the mic route.

Yes, MIDI and audio inputs are completely separate configurations in the DAW so there is no issue there.
 
If volume is a problem, the amp is out. It is that simple. Welcome to the world of ampsims. They can be hardware like line6 pod (although they too provide a USB connection, they also have audio out which can be connected to an interface) or software like TH2, Guitar Rig or Amplitube which are hosted in the DAW. Or you are back to wrestling with driver issues trying to use the amp as an input device and a different piece of hardware and the output device.

hmmm...you know amplitube came with Fender fuse...initially I had that installed...i uninstalled it because it was taking up too much memory on my old computer and I never used it.
 
I wonder if when it installed that certain drivers were installed with it allowing me to do what I wanted initially.  Probably not, but that is something that was different.  Ahh so much easier back then...lol.
 
The reason I like working with the Mustang III is that all the pedals are built in and I can adjust them thru fender fuse.  I also like how it records straight to the computer...the sound quality is better while recording vs an open amp....to me at least.

Scook has given good advice.
 
The external interface is the best option. Just be sure it uses native ASIO drivers. Some of the cheap ones don't. You should be good if you follow the advice in post 14 for the brands to choose from. I personally have used a Focusrite for many years and love it.
 
Once you have a good interface handling the audio in and out, you may be able to use the USB port on the amp to connect it directly to the computer. You will need to experiment with that. Most interfaces I have seen only have one USB port for their connection to the computer, so I doubt you will connect the amp to the interface in that manner.   I believe keyboard players with USB ports on their synths are able to input in that "direct to computer USB port" manner without issues so you should be able to do likewise with the amp/audio. Since all audio will be handled by the interface using ASIO, the whole MME/WDM issue will be a thing of the past.
 
One suggestion, get an interface with phantom power and buy a decent condenser mic as well as the interface. This will make recording vocals and miking the guitar amp easier. Using a dynamic mic isn't really the best way to go but if money is tight, you can mic the amp and vocals with any dynamic to get started.  While vox and miking electric guitars are fine with a good old SM 57 dynamic, if you need to mic acoustic guitars, a condenser is the tool for the job.
 
As far as inputs go.... MC only allows 2, and most interfaces in the lower price range also only have 2 inputs.... if you need more, or are thinking of upgrading to X3, then save the money to buy the bigger interface. I have done everything I have ever recorded using only one input live out of the 2 I have. Since I'm not in a band or running a studio for hire, having two inputs suits me fine.
 
 hope this helps a bit.