I would definitely check woth your apartment complex first - you don't want to do anything that you could get in trouble for putting up - we just moved out of an apartment and my feelings were that when you live in an apartment you have to understand that there are going to be noises (babies, music, etc...) - i wouldn't worry too much - you could check with the front office and see if anyone has complained - but i wouldn't worry too much - your neighbors probably aren't hearing as much as you think they are - we lived next door to another loud little girl and the only time we heard her was when she was outside - i wouldn't worry too much :)