You have support for .wav .flac .mp3 .opus, why would you use anything else?
If it doesn’t play Amiga era .mod files, is it really even a music player?
Funny enough, it does. Here’s the full list of supported formats. Line 54:
const char FileView::kFileFilter = ".wav *.flac *.wv *.ogg *.oga *.opus *.spx *.ape .mpc " ".mp2 *.mp3 *.m4a *.mp4 *.aac *.asf *.asx .wma " ".aif *.aiff *.mka *.tta *.dsf .dsd " ".cue *.m3u *.m3u8 *.pls *.xspf .asxini " ".ac3 .dts " ".mod *.s3m *.xm .it" ".spc *.vgm";
Although like .spc, it doesn’t support seeking, you have to listen to the whole file in order or restart for the beginning.
Because hard drives aren’t getting any bigger lately and I don’t want to multiply the size of my videogame music collection by ten?
You are saving your music in a format more efficient than opus or aac? What format is that?
Chiptune formats for retro videogame music can be very efficient. Just picking two with particularly good music, I have a 21 KB (0.02 MB) file storing 28:30 of music and 4.72 MB of files storing 1:54:48 of music, both at source quality.
The catch is that they are designed exclusively to rip chiptunes from retro videogames as close as the format designers and player coders could manage to the original. So even the oversized ones like the 4.72 MB of files extracted from a 3 MB game are going to be far smaller than a general use format like opus. But you can’t encode your own music in the format without going to massive effort to code it like you would an authentic chiptune, and you’re unlikely to like the results.