OK - I can help you out with part of your question....
The way I record stuff is to take leads from the Line Out sockets to my computer and record sequenced material (makes sure you've got it right first time) with voice over into the PC using a piece of software to receive it and convert it to an MP3 called
www.polderbits.com Which you can simply download from the internet.
No need for USB cable and great control over the final sound...
Hope this helps.
Rog