Feature request: sound levels should be user configurable.

[BenZonneveld]

The instrument sounds should have user configurable levels as it seems many people are not happy with the levels. I do have to note the patterns also have these same levels stored. Changing sound levels thus would have no effect on old patterns. Why are these levels stored in the pattern when they only use the default value's ?

At the moment the instruments read their levels from a fixed table. I propose to:

• move that table to the ATmega's internal 4kB eeprom.
• Create a way for the user to select the instruments and set the levels.
• While setting the levels the default should always be shown.
• Store the settings in the internal eeprom.

[BenZonneveld]

I just noticed the velocity values in the pattern are used to store flam information by setting bit 7.

[BenZonneveld]

Possible if all patterns in the eeprom are updated when any levels have been changed.