[CLIENT] DJ Sona music doesn't stop after the log-in screen

So here's the deal. This isn't a MAJOR bug, but it's really annoying after a bit. Everytime I log into the game, if I manage to type in my password and hit enter before the DJ Sona background music starts to play, then the DJ Sona music never ends for me. It will persist even when entering a game lobby, or when an actual match begins (the actual in-game music and sound effects don't even activate. All I hear is the DJ). After the game ends, the music still plays in the client, and if I exit and open the client again, the music is still there even if I wait for the background music to start before logging in. To make it stop I had to shut down my computer and restart it, but if I accidentally log in before the music starts, then it will repeat the cycle.

So...

1. Open LoL
2. Log in before DJ Sona background animation/music begins
3. DJ Sona music plays on repeat forever

If you could help, that'd be great. It doesn't affect gameplay (outside of cancelling out the in-game sounds I should hear), but it's a really annoying bug.

~Jascha