I like listening to porn in the subway, personally - though sometimes the howly wind sound (the windows of carriages are open for "air" this time fo year, which makes things noisy) interferes a bit.

I also like re-listening (so my attention is not sollicited as much) while I do mindless tasks at work or elsewhere, and again sometimes to fall asleep to; I have a few favs, of which Yin's series of AUs. Her soothing voice and happy!romance!J&R do it for me big time. :-)