In the spirit of sharing, here's one you might enjoy. It's beta/delta based and was written to help with agitated depression. It's probably more disentrainment than entrainment, but it does a great job of squashing mind chatter and negative thinking.
It starts off with a gentle ramp (green) into a looped set of four 1 minute segments - blue 3Hz + 17Hz modulated audio, a ramp from blue 3Hz to red 17Hz and audio from 17Hz down to 3Hz, red at 17Hz with 3Hz modulated audio, and a ramp back to the beginning. The base tone is 17Hz binaural, with the high tone and low tone swapping sides during the ramps. It ends with a 1 minute green fadeout.
Cheers,
Craig
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