I have a Sony HDTV TV with only 1 optical and 2

Help,

I have a Sony Bravia XBR (KDL52XBR6) HDTV with only 1 optical and 2 analog RCA jacks audio outputs. Feeding into the TV is a Sony blue ray DVD unit(BDP-S350), a Dish Network HDDVR receiver(VIP-612and a Bose Cinemate Series I. The Bose system has only 2 RCA analog jacks audio inputs (no optical port per this model). I now have audio "clipping" where the sound cuts out for 6-8 seconds from time to time when watching any HD program. For non HD programs the audio is fine.....no audio "clipping".

Problem: How do I resolve this issue, without buying a new Bose series II with a digital optical port. My current Bose system is less than a year old and when I purchase the above electronic products, the sales person failed to mention that the Bose system did not have the needed optical audio port for HD audio on the interface module

Will a "RCA digital coax (S/PDIF) to digital optical (Toslink) audio converter" help to address this issue, without replacing my current Bose Cinemate series 1 system?

Thanks in advance,

Mike