Is There a Way to Transfer My Audio and Projects From a Drive on my old PC to my new PC? I bought a usb cable to connect the 2 pc's but it didn't work. Thanks for any ideas

You can use a USB connection between two Windows computers, but the setup is more complex than just plug and play. 
https://github.com/ev3dev/ev3dev/wiki/Setting-Up-Windows-USB-Ethernet-Networking
 
It is probably easier to just use an ethernet crossover cable between the two computers if you do not have a router. Or you could also just mount the old drive on the new PC and do a copy from one drive to another, or use a USB docking station for the old drive. 

+1 for the USB docking station.
It's perfect for moving data (projects) between machines... and for backup purposes.
Super easy to use...
 

I always just pull the source drive out of the one computer and hook it temporarily into the new computer, and just do copy paste to my heart's content, then put the old drive back into the old computer, or maybe leave it in the new computer, depending on how old it is.
 
Bob Bone
 

Thanks Bob! We talked about that also. I had put in a drive into the old PC to store data and files. I thought of using it but it seems to make more sense to have a back up too. It's cost me in the past not having one and I have lost whole projects because of it.

Yeah, I do a couple of things.  I have a number of drives in the computer, and I create backups of data from one drive on another drive, so that much of my user data has current backups already present - just on a different drive.  I do not do this with my sample libraries, because all of that can be downloaded again, and because there are about 2.5 TB of sample libraries, already taking up two 2 TB drives by themselves.  I am speaking of things like Cakewalk Projects, and my user libraries, such as Documents, Pictures, Videos, Downloads, etc.
 
So, because of each set of data is backed up to another drive already present in the computer, should any one drive fail, I would simply put in a new replacement drive, and then copy the backup data from whichever other drive it had been backed up to, to repopulate the replacement drive.  Boom - back in business in no time at all, relatively.
 
The second thing I do is to back up ALL of the data, each drive's main data (not the backups, because that data is not needed on the external backup, since the original is being backed up).  I had picked up a 6 TB external backup USB 3 drive, and I back up everything except my C: drive - which is my primary drive, loaded with Windows, and ONLY applications.  All content and all user libraries are located/relocated to one of the other HDD's in my computer.  I am contemplating creating a partition on the external backup drive where I could essentially create a disc image of my C: there, so that if the C: itself failed, I could simply replace it and populate it from the image from the backup drive.
 
Bob Bone
 

Thank you Bob. I copied your comments and put it on my desktop for reference. 

slartabartfast
You can use a USB connection between two Windows computers, but the setup is more complex than just plug and play. 
https://github.com/ev3dev/ev3dev/wiki/Setting-Up-Windows-USB-Ethernet-Networking
 
It is probably easier to just use an ethernet crossover cable between the two computers if you do not have a router. Or you could also just mount the old drive on the new PC and do a copy from one drive to another, or use a USB docking station for the old drive. 

A crossover cable costs as much as a dock.  The router is good if you use cables.  In some situations it works quite fast.

You generally don't need to use crossover cables these days.  Most modern network interfaces support auto-sensing so you can set up a peer-to-peer link using a standard network cable.
 
AMB
 

How much time it will take (20G) for usb transfer?