Gapless/seamless playback not supported

[tyzoid]

Describe the bug
Some tracks are designed to be played without a pause between them, i.e. the sound flows seamlessly between the end of one track and the start of the next. Unfortunately, hyperchroma has a gap between tracks while it loads the next track.

To Reproduce

1. Add two tracks into the queue (tracks should be designed for seamless playback)
   • Example: Adventure, by Madeon. First three tracks are seamless: Isometric + You're On + Ok
   • Example: Dysphoria, by Crywolf. Stomach It (the 5:46 version) + Interlude - A Ghost in the Wings
2. Play the track

Expected behavior
No gap should exist between adjacent tracks.

Screenshots
Video Example: https://user-images.githubusercontent.com/974758/143723520-19f114bb-d231-468d-b8f3-01a468080bed.mp4

Additional Information (please complete the following information):

• OS: Arch Linux / XFCE 4 with Materia-light GTK3 Theme
• App Version: 0.9.0-beta

Additional context
System Information:

OS: Arch Linux x86_64 
Host: Inspiron 5579 
Kernel: 5.15.2-arch1-1 
Resolution: 1920x1080 
DE: Xfce 4.16 
WM: Xfwm4 
WM Theme: Materia-light 
Theme: Materia-light [GTK2/3] 
Icons: Flat-Remix-Blue-Light [GTK2/3]
CPU: Intel i5-8250U (8) @ 3.400GHz 
GPU: Intel UHD Graphics 620 

[aeroheim]

Thanks for filing this! This is probably going to sit in the backlog for some time, but I would like to support this.

Preloading the next track shouldn't be too much work, but it looks like true gapless playback would be quite difficult due to many factors (e.g encoder padding, compression artifacts, gapless metadata support).

I will probably implement preloading when I get around to this. True gapless playback would be much lower priority due to the amount of work required.