When shuffle is pressed, shuffling items list before sending it to audioService

[faizzzzz]

This should fix this issue: #61

Seems like the audio service only shuffles next songs that are in the queue and not existing ones. Shuffling the list before hand ensures that the first song gets shuffled as well.

[jmshrv]

Thanks for the PR, while this technically solves the problem, I don't think this is an acceptable solution because if the user disables shuffling, the resulting queue will still be shuffled. This is really an issue with the audio package I'm using, so we'll have to wait for a fix there (or submit a fix ourselves lol). I'll post the relevant issue in #61. Thanks again for your input, I really should have fixed this by now 🙃

[faizzzzz]

Got it, thanks for your input.

[dburanen]

The current flow to go random on an album or playlist is to click "shuffle", then click "next song".

Maybe rather than wait on the other person's audioService and rather than shuffle the queue before sending to audioService for reasons you stated, is there a way Finamp could send it to the audioService, and then just automatically go "next song"?