Thanks!

<Group|Name:Random|Show tracks:No>\One random Track from each Album (as playlist))|Icon:Top level|Child of:Playlists|Position:Child|Filter:Songs.ID IN (SELECT (SELECT S1.ID FROM Songs AS S1 WHERE S1.IDAlbum = Songs.IDAlbum ORDER BY Random()) FROM Songs WHERE IDAlbum > 0 GROUP BY IDAlbum)\<Album|Trim:1|Unknown:No>\<Album|Unknown:No>

You cannot reference list of tracks from a regular Magic node, but you could generate a static playlist with the Magic Nodes, and that playlist could be referenced within auto-playlists using Playlist is ... condition. To move regular Magic node to the Playlists branch you need to add Child of:Playlists|Position:Child to the global node of the mentioned mask:
[code]<Group|Name:Random|Show tracks:No>\One random Track from each Album (as playlist))|Icon:Top level|Child of:Playlists|Position:Child|Filter:Songs.ID IN (SELECT (SELECT S1.ID FROM Songs AS S1 WHERE S1.IDAlbum = Songs.IDAlbum ORDER BY Random()) FROM Songs WHERE IDAlbum > 0 GROUP BY IDAlbum)\<Album|Trim:1|Unknown:No>\<Album|Unknown:No>[/code]

Thanks. I don't mind doing it manually.
BTW is there any way to reference the list generated by a magic node in an autoplay list.

You cannot get that with auto-playlists, but you could try Magic Nodes add-on and its "One random Track from each Album" mask.

I'm needing ideas for an autoplaylist that has only one random song from every album in my library.
Any thoughts?