Better metronome

Nobody has claimed this yet.

I think the metronome is of low quality. Several has asked for ways to shut it of, all together.. (whitch easy btw) -to me that idicate an area where something new is needed.
At least a two-effect metronome (eg tttToc ttt Toc) with a clear difference on-beat, but perhaps more. Why not let the user set volume and perhaps a selection of sounds?

In the more exotic department (craaazy:P) I wonder if metronome could be a usefull tool
in live record -How about a time-delayed feature. -Eg a metronome that could be set to a precise off-value. this would let the user listen for the toc, and then have able time to do a note event. Depending of Q-setting and perhaps even HW reaction-delay, this could aid the use, in a creative fashion? -Also a 'beat-counting' feature could be implemented with a variable metronome. The user then turn the dial untill the ticks fits the played music - a display shows current BPM. -just some thoughts in respet to a somewhat disliked feature.

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- [x] Toggle metronome on/off. (#2278)
- [ ] Metronome volume control.

The issue names no implementation files, entry points, or tests; start by locating LMMS's metronome implementation and reviewing the existing toggle work in #2278. The requested scope needs clarification before coding, with volume control listed as the only unchecked item and sound selection, accents, delayed timing, and BPM detection left as broader suggestions.

Written by the indexing model from the issue text.