A: Yes. Red Bull TV and YouTube (official channels) are both free and legal.
: Professional record pools known for extensive libraries of mashups and DJ edits. Beatsource / Tidal dirtstyle-tv similar sites
These sites offer high-quality, often subscription-based streaming for competitive off-roading and action sports. A: Yes
If you prefer the physical feel of 7-inch or 12-inch "scratch sentences" like those on the original Dirt Style labels: dirtstyle-tv similar sites
Do not laugh. MySpace still exists, and it still holds the largest archive of 2008-2012 underground rap.