First, use Radio Station Manager before starting a patrol. It will spot any issues that may arise in an ini file ahead of time, and keep events from repeating.
Second- what folder are you installing the music files too?
Third, the music being separated by date is because Fred wanted end users to have the ability to only have music available the year it came out. So if you install them as time goes by you aren't listening to music in 41 that was released in 45. No easy way to control that in game.
With that in mind, I also downloaded the 1930's music because radio stations would play some of the older stuff, just like they do now.
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"There are only two types of ships- submarines...... and targets" Unknown
"you wouldn't catch me on a ship that deliberately sinks itself"- comment to me from a surface sailor. 
System:
AMD 6300 3.5 GHz | 32GB DDR3 | SATA 300 320GB HD, SATA III 1TB HD, SATA III 1.TB HD | ASUS Sonar DS sound card
NVIDIA 1660 Super OC | Windows 10
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