Merge bcstm

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

What is .bcstm?

Name: Nintendo BCSTM Audio
Extension: .bcstm
Format: Binary
Category: Audio
Developer: Nintendo
Description: BCSTM (Binary Cafe Stream) is a streamed audio format used by Nintendo on the 3DS platform. It stores compressed or PCM audio data optimized for streaming playback in games, as opposed to fully loading into memory. It is commonly extracted from game files for audio modding or playback with specialized tools.
Sample: sample.bcstm

Last updated October 3, 2026