Mellotronists

off topic?  What is the topic?

Does anyone know of audible differences between recordings made at 
44,100 sample rate and recordings made at 22,050 sample rate?  Are 
all MP3's 22,050 ?

At 44,100, SoundForge allows equalization up to a 16K band, and when 
recording at 22,050, SoundForge only allows equalization up to an 8K 
band.  Why?

Has anyone had poor results with MP3 conversion?  Some recordings 
convert well and sound great, while others have a pronounced flange / 
warble effect.

Clay