The changes to the season message breaks soundsense. A fixed season.xml:
<?xml version="1.1" encoding="UTF-8"?>
<sounds defaultAnsiFormat="[32;1m">
<sound logPattern="(Spring has arrived!)|(Spring has arrived! \*Active civs: Automatons, CaveCivs, Elves, Kobolds, Goblins, Warlocks\*)" haltOnMatch="false" playbackThreshhold="3">
<soundFile fileName="SeasonSpring/SeasonSpring01.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring02.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring03.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring04.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring05.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring06.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring07.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring08.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring09.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring10.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring11.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring12.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring13.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring14.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring15.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring16.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring17.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring18.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring19.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring20.mp3" />
<soundFile fileName="SeasonSpring/SeasonSpring21.mp3" />
</sound>
<sound logPattern="(It is now summer\.)|(It is now summer. \*Active civs: Automatons, CaveCivs, Humans, Kobolds, Goblins, Gnomes, Orcs, Warlocks\*)" haltOnMatch="false" playbackThreshhold="3">
<soundFile fileName="SeasonSummer/SeasonSummer01.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer02.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer03.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer04.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer05.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer06.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer07.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer08.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer09.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer10.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer11.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer12.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer13.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer14.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer15.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer16.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer17.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer18.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer19.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer20.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer21.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer22.mp3" />
<soundFile fileName="SeasonSummer/SeasonSummer23.mp3" />
</sound>
<sound logPattern="(Autumn has come\.)|(Autumn has come. \*Active civs: CaveCivs, Dwarves, Goblins, Kobolds, Orcs, Warlocks\*)" haltOnMatch="false" playbackThreshhold="3">
<soundFile fileName="SeasonAutumn/SeasonAutumn01.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn02.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn03.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn04.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn05.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn06.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn07.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn08.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn09.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn10.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn11.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn12.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn13.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn14.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn15.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn16.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn17.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn18.mp3" />
<soundFile fileName="SeasonAutumn/SeasonAutumn19.mp3" />
</sound>
<sound logPattern="(Winter is upon you\.)|(Winter is coming! \*Active civs: CavesCivs, Drow, Kobolds, Frost Giants\*)" haltOnMatch="false" playbackThreshhold="3">
<soundFile fileName="SeasonWinter/SeasonWinter01.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter02.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter03.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter04.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter05.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter06.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter07.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter08.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter09.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter10.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter11.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter12.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter13.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter14.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter15.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter16.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter17.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter18.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter19.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter20.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter21.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter22.mp3" />
<soundFile fileName="SeasonWinter/SeasonWinter23.mp3" />
</sound>
<!-- see attribution.txt for sources of songs -->
<sound logPattern="(Spring has arrived!)|(Spring has arrived on the calendar\.)|(Spring has arrived! \*Active civs: Automatons, CaveCivs, Elves, Kobolds, Goblins, Warlocks\*)" loop="start" channel="music" playbackThreshhold="0">
<soundFile fileName="spring/Willow and the Light.mp3" />
<soundFile fileName="spring/Savannah Sketch.mp3" />
<soundFile fileName="spring/Not As It Seems.mp3" />
<soundFile fileName="spring/Celtic Impulse.mp3" />
<soundFile fileName="spring/Achaidh Cheide.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Whip Vine.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Kobold March.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Bonecrafter.mp3" />
<soundFile fileName="roguebard/7_20.mp3" />
<soundFile fileName="399596_Quest___Overworld_Theme_1.mp3" />
<soundFile fileName="Musopen.Com Arvo Part-Magnificat.mp3" weight="5" />
<soundFile fileName="10s_silence.mp3" weight="200" />
</sound>
<sound logPattern="(It is now summer\.)|(Summer has arrived on the calendar\.)|(It is now summer. \*Active civs: Automatons, CaveCivs, Humans, Kobolds, Goblins, Gnomes, Orcs, Warlocks\*)" loop="start" channel="music" playbackThreshhold="0">
<soundFile fileName="summer/Chase.mp3" />
<soundFile fileName="summer/Heroic Age.mp3" />
<soundFile fileName="summer/Expeditionary.mp3" />
<soundFile fileName="summer/Double Drift.mp3" />
<soundFile fileName="summer/Confused State.mp3" />
<soundFile fileName="simonswerwer/theelvesofthecoast.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-ZTIQ.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer - Decapitated Camels.mp3" />
<soundFile fileName="384438_One_Eternal_Dream.mp3" />
<soundFile fileName="[tindeck.com] - rdriftwood - Hey Di Lee Hi.mp3" weight="25" />
<soundFile fileName="Musopen.Com Arvo Part-Magnificat.mp3" weight="5" />
<soundFile fileName="10s_silence.mp3" weight="200" />
</sound>
<sound logPattern="(Autumn has come\.)|(Autumn has arrived on the calendar\.)|(Autumn has come. \*Active civs: CaveCivs, Dwarves, Goblins, Kobolds, Orcs, Warlocks\*)" loop="start" channel="music" playbackThreshhold="0">
<soundFile fileName="autumn/The Pyre.mp3" />
<soundFile fileName="autumn/Temple of the Manes.mp3" />
<soundFile fileName="autumn/Skye Cuillin.mp3" />
<soundFile fileName="autumn/Opium.mp3" />
<soundFile fileName="autumn/Constancy Part Two.mp3" />
<soundFile fileName="simonswerwer/encounter.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-The Balanced Dunes.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Inith and Od Travel North.mp3" />
<soundFile fileName="433242_Times__only_moment.mp3" />
<soundFile fileName="419488_Catacombs_Of_Valhalla.mp3" />
<soundFile fileName="Musopen.Com Arvo Part-Magnificat.mp3" weight="5" />
<soundFile fileName="10s_silence.mp3" weight="200" />
</sound>
<sound logPattern="(Winter is upon you\.)|(Winter has arrived on the calendar\.)|(Winter is coming! \*Active civs: CavesCivs, Drow, Kobolds, Frost Giants\*)" loop="start" channel="music" playbackThreshhold="0">
<soundFile fileName="winter/Unpromised.mp3" />
<soundFile fileName="winter/To the Ends.mp3" />
<soundFile fileName="winter/Senbazuru.mp3" />
<soundFile fileName="winter/Frost Waltz.mp3" />
<soundFile fileName="winter/Frost Waltz (Alternate).mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Koganusan.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Spelunker.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Galena.mp3" />
<soundFile fileName="roguebard/9_22.mp3" />
<soundFile fileName="423736_ultimatewhimsyoverturefix.mp3" />
<soundFile fileName="Peer Gynt - grieg - in the hall of the mountain king.mp3" weight="25" />
<soundFile fileName="Musopen.Com Arvo Part-Magnificat.mp3" weight="5" />
<soundFile fileName="10s_silence.mp3" weight="200" />
</sound>
<sound logPattern="The wet season has arrived!">
<soundFile fileName="spring/Willow and the Light.mp3" />
<soundFile fileName="spring/Savannah Sketch.mp3" />
<soundFile fileName="spring/Not As It Seems.mp3" />
<soundFile fileName="spring/Celtic Impulse.mp3" />
<soundFile fileName="spring/Achaidh Cheide.mp3" />
<soundFile fileName="summer/Chase.mp3" />
<soundFile fileName="summer/Heroic Age.mp3" />
<soundFile fileName="summer/Expeditionary.mp3" />
<soundFile fileName="summer/Double Drift.mp3" />
<soundFile fileName="summer/Confused State.mp3" />
<soundFile fileName="simonswerwer/theelvesofthecoast.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Whip Vine.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Kobold March.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Bonecrafter.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-ZTIQ.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer - Decapitated Camels.mp3" />
<soundFile fileName="roguebard/7_20.mp3" />
<soundFile fileName="384438_One_Eternal_Dream.mp3" />
<soundFile fileName="399596_Quest___Overworld_Theme_1.mp3" />
<soundFile fileName="Musopen.Com Arvo Part-Magnificat.mp3" weight="5" />
</sound>
<sound logPattern="The dry season has come\.">
<soundFile fileName="autumn/The Pyre.mp3" />
<soundFile fileName="autumn/Temple of the Manes.mp3" />
<soundFile fileName="autumn/Skye Cuillin.mp3" />
<soundFile fileName="autumn/Opium.mp3" />
<soundFile fileName="autumn/Constancy Part Two.mp3" />
<soundFile fileName="winter/Unpromised.mp3" />
<soundFile fileName="winter/To the Ends.mp3" />
<soundFile fileName="winter/Senbazuru.mp3" />
<soundFile fileName="winter/Frost Waltz.mp3" />
<soundFile fileName="winter/Frost Waltz (Alternate).mp3" />
<soundFile fileName="simonswerwer/encounter.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-The Balanced Dunes.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Koganusan.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Inith and Od Travel North.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Spelunker.mp3" />
<soundFile fileName="simonswerwer/Simon Swerwer-Galena.mp3" />
<soundFile fileName="roguebard/9_22.mp3" />
<soundFile fileName="423736_ultimatewhimsyoverturefix.mp3" />
<soundFile fileName="Peer Gynt - grieg - in the hall of the mountain king.mp3" weight="25" />
<soundFile fileName="433242_Times__only_moment.mp3" />
<soundFile fileName="419488_Catacombs_Of_Valhalla.mp3" />
<soundFile fileName="Musopen.Com Arvo Part-Magnificat.mp3" weight="5" />
<soundFile fileName="10s_silence.mp3" weight="200" />
</sound>
</sounds>
Suggest including it in the mod download and making it read only so it will not get overwritten when someone updates the sound files.