OGG bitrate.

I was looking into some sound compression and noticed the music is at 80kpbs. I noticed it sounded quite good for that low. From what I read, Ogg sounds better than MP3 at lower bitrates. Cool.

Here is a helpful tip for audacity from their wiki:

While MP3 does allow for variable bit rate encoding, generally speaking OGG provides the same quality for a lower filesize compared to MP3, or looked at another way, higher quality for the same filesize.

These are the nominal bit rates implied for each OGG quality setting:
Quality Bit rate
-q0 64 kb/s
-q1 80 kb/s
-q2 96 kb/s
-q3 112 kb/s
-q4 128 kb/s
-q5 160 kb/s
-q6 192 kb/s
-q7 224 kb/s
-q8 256 kb/s
-q9 320 kb/s
-q10 500 kb/s