Aristos Ventures has made its first seed investment in an Austin-based company that uses technology to give musicians anywhere the ability to have a live jam session online. The Dallas-based micro venture capital firm was one of two investors who helped JamKazam raise a $500,000 round. This is Aristos Ventures fourth investment from a fund of about $10 million. JamKazam is led by CEO and co-founder Dave Wilson. "Dave and his team are very capable entrepreneurs," Felipe Mendoza, Aristos managing…