If you like games with XP, Baldurs Gate 3 runs great on the deck.

People still play Ubisoft games?

Probably need to convert it to a lossless format first with another tool. Try reading up on VLC or ffmpeg format conversions. Extract the audio and convert it to wav. Then try to slice out the section you want with audacity. Once you have the trimmed section you can use VLC or ffmpeg to convert it to whatever audio format you want.