It seems like everything I do is a third of the volume of the commercial stuff, as well as some remixes, I listen to. For example, this file:
http://www.omohide.com/qqqqq.mp3
Seems to be as loud as I can get it without the clipping red light going off in my sequencer. But it seems quiet compared to some other programs, and especially when I play it on my cellphone, compared to other stuff on there. So what is the secret here? Is it possible to increase the volume on this example? How?