: WORKAROUND:
I claim NO responsibility if you mess this up but you can use this as a temporary work around until it is resolved by creative labs without removing memory... physically.
First run MSCONFIG
select the boot tab
select advanced options
under max memory select 3990 (or any value under 4 GB is fine IE anything less than 1024 * 4)
This will reduce the amount of memory that the PC uses which will allow you to hear the audio. There is also BETA testing of newer drivers from Creative (the most recent batch of BETAS did not resolve the issue) that I am a part of. When there is a working beta I will respond so we can all utilize our 64x machines.