I think this could help with what's being discussed in this bugreport:
https://bugs.maemo.org/show_bug.cgi?id=6063

The N900 seems to suffer from a hardware fault, that lessens the volume of the earpiece, if it doesn't cut off sound entirely. Now a hardware problem can't be fixed, but maybe the problem could be lessened by someone finding a way to boost the default volume?

P.S. Don't discuss anything in Bugzilla! Do it here.