ffplay for TrimUI Smart!

Finally got it working! Available as a Quark gluon from the store or the [release page!](https://github.com/cobaltgit/Quark-Gluons/releases/tag/systems)

Compatible with the following formats (Opus audio may not work): `mp4, mkv, avi, mov, webm, m4v, ogv, flv, wmv, m4a, mp3, mp2, ogg, oga, mka, wma, flac, wav`

Handbrake preset I use (H.264 + AAC): https://gist.github.com/cobaltgit/5203dbd097cb78e064cf19962afc49ac