Bass and Treble Effects not active?

I am running Windows 7 Ultimate 32 bit. I have downloaded Audacity 2.0.5 I need to reduce a harsh “Un-tuned piano” sound in the higher frequencies by using the Bass and Treble effects. Unfortunately when I click on the effects button at the top ALL the effects menu is not active. The only active part is the up / down triangle. Please advise. Thank you.

Most commands are disabled during record, play or pause.
Press the Stop button to stop playback.