Rocksmith 2014 is on sale for US $12.48 (75% off) in the Humble Store: https://www.humblebundle.com/store/p/rocksmith2014_storefront . Offer available for about the next 13 hours from post time. The lowest price at other places is US $19.60 right now: http://cdkeyprices.com/product/Rocksmith-2014-CD-Key-Steam I just stumbled upon these and don't know how reputable these sites are. Do your due diligence.
Can't remember where I got these so I uploaded them. Metronome mp3s 80 - 200 bpm : http://www.sendspace.com/file/bf866p Music is aural not visual, if you are doing exercises you want to get your timing cues from the metronome, not the coloured blob on the screen.