Hi another question. I have my driver set to Asio. I want to switch it to 24 bit instead of 16 but when I click on asio panel it doesnt give me the option. it is set to 16 bit. when I click on 24 bit, nothing happens. any ideas? I was using asio 4 all driver with mc4. I deleted that and am trying to use the driver that came with MC7

Cakewalk does not supply drivers with MC7 (or any of their DAWs). Drivers are supplied by the hardware manufacturers.
 
What are you using for an audio interface?

Fast track pro. I just got the update  6.1.12 which was the latest update.

I can switch between wdm/ks,asio,wasapi or mme 32 bit I guess
 

where it says audio bit driver depth it says 24 bit. It will noy allow me to switch that to 16 bit. its when I click on the ASIO panel it says 16 and wont let me switch to 24 bit sample depth
 I also have it set for 44100 sample rating

Some ASIO drivers operate at a fixed bit depth. My Presonus is fixed at 32bit. Generally speaking you would not want to run the driver at less than 24bit if possible.
 
The ASIO client software is made by M-Audio and I cannot help you with that.
 
Don't forget that this is just the driver setting, to record at 24bit make sure Preferences > File > Audio Data "Record Bit Depth" is set to 24.

another question, same topic, should I set my playback timing master  to M-Audio USB ASIO analog 1/2 Fast Track Pro or M-Audio USB Asio  S/PDIF 3/4 fast track pro? for record timing master should I set it to  M-Audio USB ASIO line in 1 fast track pro or M-Audio USB ASio S/PDIF in fast track pro?

ok, I will check. thanks
 

Ok, I went to where you said and it gives me the option to choose record bit depth to 16,24, or 32 bit. same with render bit depth. for import bit depth it is set to original but also has the option for the 3 different bit rates

M-Audio USB ASIO analog 1/2 Fast Track Pro
and
M-Audio USB ASIO line in 1 fast track pro
 
unless you are using the S/PDIF connections.