I have been using recorded metronome for years for adding a click track to backing tracks I produce for live gigs. There used to be a DXi by Mike Norman called Ping Audio Metronome. The beauty of it was you would simply insert the plugin to a track, select whatever sound you wanted for a click. the note value, and BAM!, you had a metronome that could be rendered in a matter of seconds rather than recording the entire length of the song in real time. Since it was made in 2002, it no longer is functional on a 64bit machine (plus I lost the serial#), but I used it exclusively for that purpose until recently on an old XP machine. I think it would be a great new and easy feature to include with Bandlab. What I do now in its absence, is to record a 1 bar phrase of 1/4 notes to midi track assigned to a hi hat or whatever sound you like, to a drum track of a VSTi like Edirol, copy and paste it the length of the song, and mix it down to another track. Voila!, click track that will follow the tempo and any changes in the song. Hope this helps.