I use Hyperterminal at work, and Connector on my Acorn at home (Hugo will remember those and the serial block drivers.. =)
I'm running the developer image, and just press 'q' then return when the player is active. (The term is set for 115200 8N1 VT100)

Jazz
(List 112, S/N 00030, 4 gig blue)
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Jazz (List 112, Mk2 42 gig #40. Mk1 4 gig #30. Mk3 1.6 16v)