Quality of Life improvements needed

[maboleth]

I'm digging this player, but, alas, as many linux players these days, you cannot have all you need in a single package.

The stuff I noticed is missing or would be cool to have are:

1. Separate volume control. Seriously, this is default in all other players - why changing the master volume for the entire system just because your song is loud or quiet?
2. EQ with common presets and a custom option.
3. Better or more broad handling of covers and images - currently like 60% of my library base is populated. Not nearly as I would like and there's no option to find replacements or missing ones. There should be an option if the player cannot find the cover in one place, to search somewhere else instead.

Overall, nice integration into Elementary, keep up the good work!