Yes, it is possible. However, it is terribly expensive. You have to sleep in a laboratory with equipment that measures the time you fall asleep, and then your whole sleep cycle. You have a sleep cycle of shallow sleep and deep sleep. During the shallow sleep, the light audio is turned on, allowing you to absorb the language without effort.
During deep sleep, it is turned off. Keeping the audio on all night is not good for you as it can disturb your sleep pattern and make you very irritable.
As you can imagine, such a set up is terribly costly. The stuff they sell you in the shops is not very effective, for the very reasons I have given above.
However, there is stuff with special music on it, which is OK to run all night while you sleep, and it won't disturb you. My opinion, give it a try, as you have nothing to lose. I have actually downloaded a couple of these for free, so I really haven't lost anything.
Another approach is to take a hot lady to bed. After giving her all you've got, let her talk to you about her whole week. You'll be half drowsy anyway, and you know how women love to talk.