Old YouTube Videos with Disabled Audio

[inquisitor]

I have a couple old (early 2009) YouTube videos. They weren't music videos; they were personal videos with music playing. Because of the music, YouTube disabled or removed the audio.

Did YouTube actually remove the audio, or was it just disabled in some way. If it is still there, but disabled, is there a way to re-enable the audio?

Below is the metadata from one of the videos.

Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isomavc1mp42
creation_time : 2009-01-29 02:57:36
Duration: 00:05:51.69, start: 0.000000, bitrate: 393 kb/s
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 3
kb/s (default)
Metadata:
creation_time : 2009-01-29 02:57:36
handler_name : (C) 2007 Google Inc. v08.13.2007.
Stream #0:1(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 480x2
72 [SAR 1:1 DAR 30:17], 389 kb/s, 29.97 fps, 29.97 tbr, 29967 tbn, 59934 tbc (de
fault)
Metadata:
creation_time : 2009-01-29 02:57:36
handler_name : (C) 2007 Google Inc. v08.13.2007.