Be able to load in multiple audio files at once and play them together

A lot of charts have their guitar section split out from the rest of the song so this will be helpful for editing existing charts

Make sure the application works fine on mobile and make any changes needed.

The people here https://github.com/mdsitton/RhythmGameChart are building a new *.rgc format for charts. When they finish it I'll want to support it.

Add a mode that draws the fretboard in the 5 button style

Be able to:

• Parse tap notes from *.chart files
• Changes notes to be tap notes in the chart editor

Be able to:

• Parse solo section events from *.chart files
• Add and view solo section events in the chart preview / editor

Be able to:

• Render a scrollable fretboard that displays the entire song while the song is not playing
• Click on individual notes and change their time values / note color

Be able to:

• Edit note length to create sustained notes
• Parse sustained notes from *.chart files

Be able to:

• Parse practice section events from *.chart files
• Add and view practice section events in the chart preview / editor

Be able to:

• Select a *.chart file
• Parse the file into a typed object
• Convert that typed object back into a *.chart file
• Download that *.chart file

For this feature, only single green/red/yellow/blue/orange/open notes will be supported.

Be able to:

• Parse BPM changes from *.chart files
• Add BPM changes to the chart editor / preview

A way to edit chart metadata in the app.

One idea is to have a button that brings up a modal with all the metadata in it.

Add a way to adjust the speed of the chart preview

Try to match it with the Clone Hero "Note Speed" setting.

Add a mode that draws the fretboard with only 4 lanes, and generates charts that work with drums

Select multiple notes, copy them, and then paste them at another time.

Add an optional metronome

Customizable keybindings

Be able to:

• Parse star power section events from *.chart files
• Add and view start power section events in the chart preview / editor

Be able to:

• Tap along to the song while it is playing to generate time values
• Click on a time value and turn it into a new note (at that time)
• Click on a button that turns all time values into new notes

Some of the test songs are out of sync when previewed. The clone hero importer must be doing something I'm not but no idea what that is yet.

Examples:

• Rise Against - Savior
• Dragonforce - Fury of the Storm

Be able to:

• View which notes are strums and which are hammer ons
• Manually force certain notes to be strums and hammer ones
• Parse strums/hammer ons from *.chart files

Be able to:

• Parse time signature changes from *.chart files
• Add time signature changes to the chart editor / preview

Be able to:

• Render the fretboard on screen
• While the song is playing, draw the notes on the fretboard in sync with the song

Be able to:

• Group multiple notes at the same time value together
• Automatically make chords from notes that are at the same time value in *.chart files

It could store the current chart in local storage and then load that by default when you open the app.

Be able to:

• Select an audio file
• Play the audio file
• Pause
• Stop
• Fast forward