Merge xwma into audiobook

Download and install the latest version of Filestar.
Right click on one or more Xwma file(s) on your desktop and select Convert with Filestar.
Type merge into audiobook in the search box.
Press Merge.

What is .xwma?

Name: Microsoft xWMA Audio
Extension: .xwma
Format: Binary
Category: Audio
Developer: Microsoft
Description: xWMA is a container format for compressed audio data developed by Microsoft, based on Windows Media Audio (WMA) compression but with a simplified header structure optimized for streaming and playback via the XAudio2 API. It is primarily used in Xbox and Windows game development to store sound effects and music efficiently.
MIME Type: audio/x-xwma

Last updated October 3, 2026