This is the process I use. It might help you too.
1. Make a COPY of ALL the files in your recording subdir. Save them to another subdir.
2. Using NOTEPAD create a plain text file with ONE line in it, as follows:
for %%v in (*.mp3) do echo Dummy > %%v
3. Then, save it as CLEANIT.bat (or whatever you want to call it) in your C:\Windows subdir so it'll be in your path.
4. Goto START > RUN. Type
cmd and click OKay.
5. Type
CD\subdir and hit ENTER.
Note:
subdir = name of temp folder you created above and copied files to.
6. Type
cleanit and hit ENTER.
7. Type
exit and hit ENTER.
You will have a directory that has ALL the files you have recorded, but instead of taking up massive amounts of megabytes, each file will only be 1kb in size.
Create your new RECORD subdirectory where you want Timetrax to start recording music and copy those 1kb files over there and this will prevent TT from re-recording them. The ONLY downside is that XM sometimes plays with the names of the files and at other times TT doesn't match the song so there might be duplicates; one with the artist - title - album.mp3 and the other with a truncated artist - song.mp3 but you should be able to make a match visually and can delete the dups.
Once you have a batch of new songs, sort the files by SIZE. Copy the BIG ones to a working directory and then use the BATCH file to convert the BIG files to the 1kb size to block re-recording.
Warning. Always remember to COPY the files to another directory as there is no recovery if you zap them. All you could do is delete the zapped files and let TT record them again when they are played.
Cheers,
Tony