Я хотел бы

Pimsleur says that this has a masculine pronunciation and a feminine pronunciation, but I cannot really hear the difference. So, I have been searching the web for the phrase "Я хотел бы" in order to see if I can find the difference in writing. And today I found it at LearningRussian.com.

Я хотел бы подстричь волосы.
Я хотела бы подстричь волосы.

That makes a lot more sense!