Glyn Barnes
That being the case its not a bug. It makes sense that time stamp audio clips are placed according to the time stamped unless you specify otherwise.

Awesome! A two-fer-one!
 
Well, it was a preference indeed. It's called "Always Import Broadcast Waves At Their Timestamp." I turned it OFF!  It works now, but talk about a cryptic preference setting!  Now WAV files can be drag-and-dropped into an audio track at the mouse cursor. Very good! Thanks!
 
...and...I did some experimenting just now with dragging and dropping MP3 files into an audio track. It appears that MP3 files that I have purchased from Amazon Music only give the error, while others work fine, either encoded from my CD collection or converted within iTunes from AAC to MP3. Something about Amazon's MP3-encoding process that Cakewalk does not like? Also, a sidenote--AAC files import OK as well. This helps me because I like to examine professional examples in RMIX and a spectrum analyzer.

There are probably embedded images in the MP3s...   There were a few discussions about this topic previously and it was determined that the Windows code used by SONAR doesn't handle this imbedded data.
 

The mp3 problem is because of embedded images as metadata as previously mentioned. You will need to open it up in an audio editor and then save it again stripping out the image/metadata. Then sonar can open it.

Given that >50% of bugs posted in this forum are user error, or project or system specific, including several mentioned in this thread,  it seems a bit of a stretch to think that there will be a dump of all CWBRN bug reports with fixed y/n on them.
 
Cakewalk does better than most on discussing improvements and big fixes. For each and every release there is a statement like
 
http://www.cakewalk.com/support/kb/reader.aspx/2007013324
 
that is good enough for me.

 I know this will sound weird but I once couldn't get one of those mp3s to load into Sonar so I renamed the extention from .mp3 to .wma and Sonar opened it!