The whole rhythmic approach in Irish and Scottish music is much different than bluegrass. I also suggest you go to the local session and just listen a time or two and ask people for the names of the tunes they play (at our sessions people tend not to state the tune names unless someone asks). There may be a way to search the tune section of the site to pull up the ones that the most people have added to their personal tunebooks. I'm sure there are threads on their discussions that talk about the most common session tunes, but the lists are long.
You might try looking at the discussion and tune list areas of the site The whole site exists to help people learn session tunes and play with others. It's really difficult to cut a suggested list to 10, since there are several tune types (reels, jigs, hornpipes, polkas, etc.) that are commonly played. I took a quick look at the Cafe MP3 page and the answer looks like no.
