Fine grained seek controls

[Warr1024]

I would like some better controls for making small position adjustment within a track.

Right now, the only evident UI for this is the seek bar, which only allows jumping to some absolute position relative to the total length of the track. If the track is very long, like a podcast or audiobook, and I'm trying to use it on a small touchscreen like a phone, it takes a lot of trial and error to find a position close to where I want.

Something like buttons that seek by small predetermined amounts (e.g. 5 seconds, 1 minute, 10 minutes) would be very helpful. These could possibly be folded up into a popup menu next to the "next track" button to save space on small screens.