I have an mp3 encoded in MPEG 2.5 Layer 3.

Bitrate: 128 kbps
Frequency/mode: 11025 kHz

mIRC's $sound/$mp3 returns that the frequency/mode is 32000.

Used Lame to encode a test.mp3 to duplicate the misinformation.

Is this a bug, or does mIRC not support MPEG-2.5 encoding?

Below is an mp3 I used to test the bug:

We don't just write the scripts, we put them to the test! (ScriptBusters)