[aqualung-friends] Auto read metadata patch

[Chris C. <go...@ci...>]

Attached is a simple patch that turns "Reread file metadata" into an
automatic process (with a settings option).

I'm not sure if the option should be on the Metadata tab or not, so
maybe it should be changed.

I haven't tested the patch for latency issues (whether it introduces a
slight delay before playing), but haven't noticed any significant
performance hit.

-- 
Chris Craig
http://ciotog.net