tangerine

Overview:

The 3DS build is currently in heavy development as the shift is made from pp2d to citro2d. Please use the previous build instead of building yourself.
Put all music in ""/music"" folder on your SD card as traditional file browsing is not currently supported yet
Support for multiple formats (wav, flac, and mp3 currently)
Skip forward and back a song using the L and R buttons
Use the progress bar on the touch screen to scrub through the audio (SLOW)
Pause/Play with A, and return to file selection with B
Touchscreen controls (yay?)

☐ Update internal documentation
☐ Move to citro2d
☐ Switch version
☐ Actual file browsing
☐ Support for more formats
☐ Ability to create playlists
☒ Ability to play playlists
☐ Record and save bits of audio using the microphone like the built in app
☐ UI overhaul (currently it's not super terrible, but it's definitely not where I want it to be)
☐ Themes maybe?

You can just run make or make all to get both 3ds and switch builds, but for just one of them follow this:

Make sure you have the latest releases of ctrulib, citro3d, citro2d, and 3ds-mpg123 installed via the devkitPro pacman. Then type

make 3ds

to get a .3dsx, .smdh, and .cia

Make sure you have the latest releases of libnx and switch-mpg123 installed via the devkitPro pacman. Then type

make switch

to get an .nro

Some flac files have issues with playback speed on hardware but work fine in Citra
Scrubbing within flac/mp3 files may take several seconds on Old 3DS depending on the size of the file WARNING: This was my first time ever writing C. There are going to be bugs and 90% percent of this is probably terrible code, so don't hesitate to report anything because I probably wouldn't have found it otherwise.

Thanks to

@smealum for ctrulib
@fincs for citro3d
@Steveice10 for buildtools
@BernardoGiordano for pp2d and help with Makefile/rsf files
VLC for android for the rough UI design concept
@Sergey#5402 for help testing
@Fenrir#3268, @ahoischen#9453, and @TurtleP#2954 (and anyone else!) in #dev in the Nintendo Homebrew discord for help with my beginner C mistakes
mackron for their doctor libs (dr_flac and dr_wav specifically)
devkitPro for the example Makefiles, portlibs, and citro2d
switchbrew/3dsbrew for documentation and examples
The big N for the Nintendo 3DS Sound application
Erokia for ""Heartbleed Synth""
and @deltabeard for their orginal libmpg123 portlib fork and ctrmus (big inspiration, helped me to understand the DSP a lot better)