Problems with the Hard Drive

I have a problem with the hard drive of my MacBook Pro 13 " Retina Display . This hard drive has a total capacity of 121 GB , according to diagram , of which 5.8 GB by Progam , 3.7 GB of audio , 1.3 GB of photos and 1GB occupied by video . the others are 107 GB by "Others" is so that my chart loud remain about 1.1GB of free memory . Someone ne idea what to do because more space to get free ? the desk as the trash is completely empty . Message after some time from the system "Start volume full ". what can I do to make the space to "Other" calls to devalue ??