Do I need to run a network wire from my router to the Streamer? OR Can it run on wireless? I have good enough signal to stream video. I also have 1-3 GB usb hard drive which I can put near streamer. Can I download necessary files for streamer to a USB hard drive and have streamer read it off hard drive plugged via usb into streamer?Depending on streamer you might have to run hard wire. For example the Vault2i is hard line for internet only.
A lot of other units are both wired and wireless for internet, Auralic for sure.
Just as matter of habit I have always run hard wire to ensure no dropouts on signal.
Most good streamers can read a USB HDD as well, the vault and Aurender definitely can. Both will allow you to browse the contents of the USB drive just like it was on your computer.