Dubstepforum.com

Normally I use beatport.com, juno.co.uk, and tracklists from other mixes to find my music.

I'm looking for mostly prog. trance, prog. house, fidget, breaks, dubstep, psytrance, garage

Are there other websites like beatport and juno where you can play samples of songs so you actually have an idea what your buying?

There is a shit ton of sites out there these days that work the same way. I think my label is on like 20/30 of them lol. 95% of our sales come from Juno and Beatport tho.