I am completely frustrated with the following problem.  I am wondering if someone can help.
I have a Dell E520 w/ Windows XP, with my soundcard being Sigmatel.  On a music site where I am trying to record vocally, I was told that Sigmatel doesn't cut it because it doesn't give on a "Stereo Mix" option.
Anyway, I went out and bought an external soundcard hoping to solve this issue (one called Philips Aurilium with SoundAgent2--USB plugin).  It installed fine, but I am STILL having problems recording.  On this soundcard, if I go to Mixer>Recording and check off the "Wave Out" mix as suggested,  I get NO vocals when I record.  I only get vocals when I choose the "Line In"...but when I do that I get NO music on playback.
I've read about so many people with Sigmatel on their PCs having this problem with recording and playback.  Any suggestions?
Should I get a new soundcard? I am at a loss as to what to do.