Hi,
Are u using snd_play command????? because i have the same problem that you and i discover that the snd_play command when you use it, it´s allocated to memory ...doesn´t matter it´s playing or not. The better you can do is use media_play (don´t have this problem) but media play you can not put the sound in the resource.

My game when i start begins with 170 in memory and when i finished it´s have more than 500 mb of ram. If you discover a way to take of the memory say because i want to now.

Tks