6.4.8 changed how random tracks are selected, but never updated the unit
test. This patch fixes the unit test, and makes a few changes to make
sure the right tracks are getting selected.
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
Dividing queue size by 3 seems to give a better distribution of tracks,
but only for a large set of tracks (such as the entire collection).
let's skip the division if the queue only has a small number of tracks.
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
Anna Schumaker