1. how do I see or display the clock

This is only in the version 2.0 beta software and later. If you are running software 1.02 or 1.03, you cannot see the clock.

is there any way to keep the loga I downloaded as the logo that is displayed after boot and during songs if I so choose.

The logo that is displayed during boot will only show during boot. It is a different file than any of the other images. You cannot associate a graphic with a given song.

There are some new tools, just being developed, which let you change some of the logos on some of the visuals (but not all of them).

The visuals named "Image Pan", "TuxMuch", "TuxTooMuch", and "Tubular" can be edited with a program called RAWerter, do a search on this BBS for the software. However, I recommend that you get comfortable with the player before attempting to change these files.