Nice! If you like use fonts also for HD Audio, you can do something like this. Also using IfElse structure might or might not be a little easier to read depending on your taste.
Following code should be same as yours above but using IfElse and global variable for aspect ratio, also displays 2.39:1 aspect ratio correctly.
I think that I have one disc with DTS:X but as I don't have multichannel setup so haven't paid so much attention...
<img src="tooltip:Studios-[Studios]"/ height="80"> <font face="ToolTip01" size="180" color="#9496a3">Save(Math(Trunc(Replace([Aspect Ratio], :, // ) + .005, 2)), gAR)IfElse(Compare(Load(gAR), <, 1), , Compare(Load(gAR), <, 1.38), M, Compare(Load(gAR), <, 1.68), N,Compare(Load(gAR), <, 1.80), O,Compare(Load(gAR), <, 1.87), P,Compare(Load(gAR), <, 2.36), Q,Compare(Load(gAR), <, 2.40), R)<//font>/ <font face="ToolTip01" size="200" color="#9496a3">IfElse(IsEqual([Width],1920,5),¥,IsEqual([Width],1360,5),¤,IsEqual([Width],888,5),£,IsEqual([FPS],25,2),¢,1,¡)<//font>/ <font face="ToolTip01" size="170" color="#9496a3">IfElse(IsEqual([File Type],mkv),î,IsEqual([File Type],ifo),W,IsEqual([File Type],bdmv),U)<//font>/ <font face="ToolTip01" size="150" color="#9496a3">IfElse(IsEqual([Compression],div,8),ú,IsEqual([Compression],hevc,8),ü,IsEqual([Compression],h264,8),û,IsEqual([Compression],xvid,8),ă,IsEqual([Compression], vc-1,8),Ā,IsEqual([Compression],mpeg2,8),þ,IsEqual([Compression],mpeg1,8),ý,IsEqual([Compression],mpeg4),ÿ)<//font>/ <font face="ToolTip01" size="150" color="#9496a3">IfElse(IsEqual([Compression],dts-hd ma,8),&,IsEqual([Compression],dts,8),#,IsEqual([Compression],ac3,8),z,IsEqual([Compression],pcm,8),/),IsEqual([Compression],mp3,8),*,IsEqual([Compression],flac,8),',IsEqual([Compression],aac,8),0,IsEqual([Compression],mpeg,8),z,IsEqual([Compression],vorbis,8),/,,IsEqual([Compression],truehd,8),x,IsEqual([Compression],opus,8),1,)<//font>/ <font face="ToolTip01" size="165" color="#9496a3">IfElse(IsEqual([Channels],1,2),=,IsEqual([Channels],2,2),>,IsEqual([Channels],3,2),],IsEqual([Channels],4,2),?,IsEqual([Channels],5,2),^,IsEqual([Channels],6,2),‐,IsEqual([Channels],7,2),_,1,‑)IfElse(IsEqual(ListItem([Compression], 1, +),Atmos),/ !,IsEqual(ListItem([Compression], 1, +),DTS:X),/ $)<//font>