Downgrading module please help!

Hello,

I was using the drupal audio module, beta version and I want to downgrade back to the regular version. But when I do, it gives me a strange database error:

user warning: Table 'where26_mp3.audio_file' doesn't exist query: SELECT origname, filename, filepath, filemime, filesize FROM audio_file f WHERE f.vid = 409 in /home/where26/public_html/wheresmymp3/includes/database.mysql.inc on line 174.

Please advise,
Thank you