Cheap and Easy Tip of the Day:
A significant amount of click track bleed from the headphones can ruin a take. Use a cheap pair of earbuds or in-ear monitors along with some ear muff hearing protectors. Any bleed will be completely isolated.
Great for recording acoustic instruments, especially singer/songwriters, where bleed normally a concern, this technique also provides exceptional isolation from extremely loud sources.
Since click track bleed is most noticeable with higher frequencies, try placing a filter on the click at about 1khz.