Didn't want to hijack the previous post on this subject, but......
 
Does the transpose audio feature work well? Never used it. I've got a song which I cannot sing very well in the key it was recorded in. Can I use the transpose audio feature to change the key of all the tracks w/o losing any quality or sounding "computerized" so to speak?
 
Thanks.
 
~Jeff

Transpose midi works perfectly
Transpose audio ok if 1 or 2 half steps...also depending on you purpose
Not for a master in my opinion if it's the full master track
Maybe a guitar part by itself...

+1, you would really need to try how it affects what you are doing. If doing "all" tracks, I have done this to master mixdowns (only one wav file) and found Audacity (free) to be a viable alternative (especially if not doing strict semitone transposition). I actually tested Audacity for a song tuned down by 40cents and it did surprisingly well.

Another option is to transpose the mix, and if it sounds pretty good, then maybe add a few instruments that aren't transposed to enhance it

I am a hardcore Sonar user and supporter, but I have to admit MixCraft is much better when it comes to transposing keys.