I found a trivial bug within cdloop script, it doesn't use CDTOOLDEV environment variable. I modify it a bit to use it and I also clean the code a little... if necessary I will upload a minimal modification patch.
Created attachment 97338 [details, diff] Little bach patch that clean the code and support CDTOOLDEV
May be added to next patch released. Offer the same old interface but take in cont CDTOOLDEV used by cdplay.