Hello c smith,
Thanks for posting your question in the Microsoft Q&A forum.
While Windows Media Player has become outdated for 64-bit applications, there are several modern alternatives for audio/media playback controls that work well in 64-bit environments:
- NAudio
- BASS Audio Library
- VLC.NET
- MediaElement in WPF
- Windows 10 Media Foundation
- FFmpeg
- DirectShow.NET
Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful