Android Mediastore does not list MID & AAC files

When using mediastore to list audio files from internal/external storage, AMR, OGG and MP3 are listed b开发者_开发技巧ut MID and AAC are not. If I use Android file system API to list all the files, I can list the MID and AAC but can't play them, even though Android claims to support AAC.

Any ideas to this?

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http://developer.android.com/guide/appendix/media-formats.html

AAC decoding is only supported in 3.1+. I don't know what version ur working on, but that might be the issue.