I need to run off to work sometime soon, so I can't give a detailed answer now, but the quick answer is you put either the text of the full script of <script src="abcjs_basic_latest-min.js" type="text/javascript"></script> into a tiddler and tag that tiddler with $:/tags/RawMarkup to add the script to the wiki, then the best way would probably be to make a javascript macro (or widget, but since the music probably won't change too often a macro should be enough).
This is the simplest javascript macro example I can think of off the top of my head http://inmysocks.tiddlyspot.com/#%24%3A%2Finmysocks%2Fmacros%2Fadd-time.js and this is how I put the snap.js library into a wiki http://ooktech.com/jed/ExampleWikis/SnapSVG/#%24%3A%2Fplugins%2Finmysocks%2FSnapJS%2FSnap.js If you need more let me know, but I probably won't be able to help much until sunday. -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/645706d7-9252-4b1d-a5cd-0bdcd5611090%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

