Do you really need THEIR cable?
or have there been hacks/workarounds for that using a good soundcard and a regular instrument cable?
Yes, it's awesome.
That good? I've been teaching myself to play for the last 5 years. I consider myself to be decent, but if this game could take me to the next level that would be so cool.
Are there games or modes in Rocksmith which revolve around scales and other such exercises? (yes i could just do them, but that's boring)